```markdown <img src="https://i.imgur.com/1XZQzQz.jpg" alt="A close-up image of a dry, cracked tongue, illustrating the condition of dry mouth."> Dr Agnieszka Frydrych THE UNIVERSITY OF WESTERN AUSTRALIA **Dry** **Mouth** ```  #### Clinical Presentation and Overview Dry mouth, clinically known as xerostomia, is a condition characterized by a lack of sufficient saliva to keep the mouth moist. This condition can significantly impact oral health and quality of life. #### Key Characteristics - Physical manifestations often include a dry, cracked appearance of the tongue. - It is a common clinical concern addressed within dental and oral medicine specialties. #### Academic Affiliation This information is presented by Dr. Agnieszka Frydrych from The University of Western Australia. A close-up photograph of a dry, cracked tongue, illustrating the condition of dry mouth. The image is part of a presentation slide from The University of Western Australia, with the title 'Dry Mouth' and the presenter's name, Dr Agnieszka Frydrych, displayed. ```markdown Lecture outline - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management ``` The following topics will be covered in this lecture: - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management # Lecture outline - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management The following topics will be covered in this lecture: - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management ```markdown Lecture outline - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management ``` The following topics will be covered in this lecture: - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management # Lecture outline - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management The following topics will be covered in this lecture: - Saliva - Mouth dryness as a sign and a symptom - Intra-oral and extra-oral implications of mouth dryness - Management Why talk about dry mouth? “Saliva is not one of the popular body fluids. It lacks the drama of blood, the sincerity of sweat and the emotional appeal of tears....” Mandel ID 1990  #### Clinical Significance of Saliva Why talk about dry mouth? “Saliva is not one of the popular body fluids. It lacks the drama of blood, the sincerity of sweat and the emotional appeal of tears....” — Mandel ID, 1990 Close-up photograph of a dry, cracked tongue, illustrating the condition of dry mouth. The image is used to visually support the discussion on saliva and its importance, as referenced in the accompanying text. # Saliva “The salivary glands, like other secreting apparatus, are liable, per se, to become sluggish in their function…” “.....knowing as we do the necessity of saliva...we at least are bound to employ the shortest, surest and easiest method for restoring a secretion, which in the animal system is indispensable to bodily health and energy.” Wright S 1842 The salivary glands, like other secreting apparatus, are liable, per se, to become sluggish in their function. Knowing as we do the necessity of saliva, we at least are bound to employ the shortest, surest and easiest method for restoring a secretion, which in the animal system is indispensable to bodily health and energy. — Wright S, 1842 ```markdown Saliva <img src="https://i.imgur.com/9JzQz.png" alt="Close-up image of saliva in the mouth, showing droplets and bubbles on oral tissues." /> <table> <thead> <tr> <th colspan="3">CONSTITUENTS</th> </tr> </thead> <tbody> <tr> <td><b>INORGANIC:</b></td> <td><b>WATER</b><br>99.5%</td> <td><b>ORGANIC:</b></td> </tr> <tr> <td>• Sodium</td> <td></td> <td>• Secretory IgA</td> </tr> <tr> <td>• Potassium</td> <td></td> <td>• MUC5B</td> </tr> <tr> <td>• Calcium</td> <td></td> <td>• MUC7</td> </tr> <tr> <td>• Magnesium</td> <td></td> <td>• Amylase</td> </tr> <tr> <td>• Chloride</td> <td></td> <td>• Lysozyme</td> </tr> <tr> <td>• Bicarbonate</td> <td></td> <td>• Lactoferrin</td> </tr> <tr> <td>• Phosphate</td> <td></td> <td>• Statherin</td> </tr> <tr> <td>• Thiocyanate</td> <td></td> <td>• Albumin</td> </tr> <tr> <td>• Iodide</td> <td></td> <td>• Glucose</td> </tr> <tr> <td>• Fluoride</td> <td></td> <td>• Lactate</td> </tr> <tr> <td></td> <td></td> <td>• Lipids</td> </tr> <tr> <td></td> <td></td> <td>• Amino Acids</td> </tr> <tr> <td></td> <td></td> <td>• Urea</td> </tr> <tr> <td></td> <td></td> <td>• Ammonia</td> </tr> <tr> <td></td> <td></td> <td>• Other</td> </tr> </tbody> </table> <table> <thead> <tr> <th colspan="1">FUNCTIONS</th> </tr> </thead> <tbody> <tr> <td>LUBRICANT</td> </tr> <tr> <td>ION RESERVOIR</td> </tr> <tr> <td>BUFFER</td> </tr> <tr> <td>CLEANSER</td> </tr> <tr> <td>ANTIMICROBIAL FUNTIONS</td> </tr> <tr> <td>AGGLUTINATION</td> </tr> <tr> <td>PELICLE FORMATION</td> </tr> <tr> <td>DIGESTION</td> </tr> <tr> <td>TASTE</td> </tr> <tr> <td>EXCRETION</td> </tr> <tr> <td>WATER BALANCE</td> </tr> </tbody> </table> ```   #### Salivary Constituents Saliva is composed of 99.5% water, supplemented by various inorganic and organic components. - **Inorganic Components** - Sodium - Potassium - Calcium - Magnesium - Chloride - Bicarbonate - Phosphate - Thiocyanate - Iodide - Fluoride - **Organic Components** - Secretory IgA - MUC5B and MUC7 - Amylase - Lysozyme - Lactoferrin - Statherin - Albumin - Glucose - Lactate - Lipids - Amino Acids - Urea and Ammonia #### Salivary Functions Saliva serves multiple critical roles in oral and systemic health: - **Protection and Maintenance**: Lubricant, Ion reservoir, Buffer, Cleanser, Pellicle formation. - **Biological Defense**: Antimicrobial functions, Agglutination. - **Sensory and Digestive**: Digestion, Taste. - **Systemic Regulation**: Excretion, Water balance. Close-up image of saliva in the mouth, showing droplets and bubbles on oral tissues, illustrating the physical appearance of saliva during secretion. A table listing the constituents and functions of saliva, with inorganic and organic components categorized under 'Constituents' and various physiological roles listed under 'Functions'. ```markdown Saliva - About 600ml of saliva produced in 24h - Stimulated saliva contributes up to 80-90% of the total daily volume - The unstimulated saliva is most important for oral comfort ``` - Approximately 600ml of saliva is produced in a 24-hour period. - Stimulated saliva contributes up to 80-90% of the total daily volume. - Unstimulated saliva is the most important factor for maintaining oral comfort. ```markdown Saliva - Tubarial salivary glands Valstar MH et al 2021 ``` ```html <table border="1" cellpadding="5" cellspacing="0"> <tr> <td> <img src="https://i.imgur.com/7X7X7X7.png" alt="Anatomical illustration showing tubarial salivary glands in the skull, with a magnified 3D view of the highlighted area." /> </td> </tr> </table> ```  #### Tubarial Salivary Glands Recent anatomical research identifies the presence of tubarial salivary glands. — Valstar MH et al, 2021 Anatomical diagram showing the tubarial salivary glands in the human skull, with a magnified 3D view highlighting the gland's location and structure. The diagram includes a side profile of the skull with the glands indicated in yellow, and a detailed 3D reconstruction on the right. # Saliva - About 600ml of saliva produced in 24h - Stimulated saliva contributes up to 80-90% of the total daily volume - The unstimulated saliva is most important for oral comfort - Approximately 600ml of saliva is produced in a 24-hour period. - Stimulated saliva contributes up to 80-90% of the total daily volume. - Unstimulated saliva is the most important factor for maintaining oral comfort. ```markdown **Saliva** <table border="1" cellpadding="5" cellspacing="0" style="border-collapse: collapse; width: 100%;"> <thead> <tr> <th colspan="1" rowspan="2">Salivary Gland</th> <th colspan="1" rowspan="2">Sleep</th> <th colspan="1" rowspan="2">Unstimulated Whole Saliva</th> <th colspan="1" rowspan="2">Stimulated (Mechanical) Whole Saliva</th> <th colspan="1" rowspan="2">Stimulated (Acid) Whole Saliva</th> </tr> <tr> </tr> </thead> <tbody> <tr> <td>Parotid</td> <td>0</td> <td>21</td> <td>58</td> <td>45</td> </tr> <tr> <td>SM</td> <td>72</td> <td>70</td> <td>33</td> <td>45</td> </tr> <tr> <td>SL</td> <td>14</td> <td>2</td> <td>2</td> <td>2</td> </tr> <tr> <td>Minor glands</td> <td>14</td> <td>7</td> <td>7</td> <td>8</td> </tr> </tbody> </table> Jensen SB et al 2014 ```  #### Percentage Contribution by Gland Type | Salivary Gland | Sleep (%) | Unstimulated Whole Saliva (%) | Stimulated (Mechanical) (%) | Stimulated (Acid) (%) | | :--- | :---: | :---: | :---: | :---: | | Parotid | 0 | 21 | 58 | 45 | | Submandibular (SM) | 72 | 70 | 33 | 45 | | Sublingual (SL) | 14 | 2 | 2 | 2 | | Minor glands | 14 | 7 | 7 | 8 | — Jensen SB et al, 2014 Table 1 shows the relative (%) contribution of different salivary gland types to whole saliva under various conditions, including sleep, unstimulated whole saliva, stimulated (mechanical) whole saliva, and stimulated (acid) whole saliva. The table indicates that the SM gland contributes 72% during sleep, while the parotid gland contributes 58% during mechanical stimulation. The minor glands contribute 14% during sleep and 8% during acid stimulation. ```markdown Saliva - Secretion of saliva is regulated by reflexes involving the autonomic nervous system <img src="https://i.imgur.com/8XzZQ9L.png" alt="Diagram showing the neural pathways regulating salivary secretion, including the cerebral cortex, thalamus, hypothalamus, limbic system, pons, medulla oblongata, salivatory nuclei, cranial nerves V, VII, IX, X, submandibular ganglion, sublingual gland, submandibular gland, otic ganglion, parotid gland, superior cervical ganglion, and sympathetic trunk."> Source: Clinical Oral Physiology. Quintessence Publishing ```  The secretion of saliva is regulated by reflexes involving the autonomic nervous system. This complex pathway involves: - **Central Control**: Cerebral cortex, thalamus, hypothalamus, and limbic system. - **Brainstem Integration**: Pons, medulla oblongata, and salivatory nuclei. - **Peripheral Pathways**: Cranial nerves V, VII, IX, and X; submandibular and otic ganglia; superior cervical ganglion and sympathetic trunk. A diagram illustrating the neural pathways regulating salivary secretion, showing connections from the cerebral cortex, thalamus, hypothalamus, and limbic system to the salivatory nuclei in the pons and medulla oblongata. It details the involvement of cranial nerves V, VII, IX, and X, with pathways leading to the submandibular and sublingual glands via the submandibular ganglion, the parotid gland via the otic ganglion, and sympathetic innervation through the superior cervical ganglion and sympathetic trunk. ```markdown Saliva - Minor salivary glands: - Parasympathetic innervation - Little or no sympathetic innervation ```  #### Minor Salivary Gland Innervation - Primarily parasympathetic innervation. - Characterized by little or no sympathetic innervation. A slide titled 'Saliva' with bullet points detailing the innervation of minor salivary glands, indicating parasympathetic innervation and little or no sympathetic innervation. The text is presented in white and light blue on a blue background with a speaker icon in the bottom right corner. ```markdown Saliva - Minor salivary glands: - Parasympathetic innervation - Little or no sympathetic innervation ~70% MUC5B ``` #### Minor Salivary Gland Innervation and Output - Primarily parasympathetic innervation. - Little or no sympathetic innervation. - Responsible for approximately 70% of MUC5B secretion. ```markdown **Saliva** - Parasympathetic stimulation generates abundant saliva with low protein concentration - Sympathetic stimulation produces little saliva with high protein concentration and viscosity ``` #### Autonomic Effects on Secretion - **Parasympathetic Stimulation**: Generates abundant saliva with low protein concentration. - **Sympathetic Stimulation**: Produces a small volume of saliva with high protein concentration and high viscosity. ```markdown Saliva - Many factors influence salivary flow rates! ```  Salivary flow rates are dynamic and influenced by a wide variety of physiological and environmental factors. A photo of various fruits, including a sliced lemon, apples, and a peach, arranged on a blue background. The image is used to illustrate the topic of saliva and factors influencing salivary flow rates, with text overlay mentioning that many factors influence salivary flow rates. ```markdown # Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size ```  #### Primary Influencing Factors - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size The image displays a bulleted list titled "Saliva" with the subheading "Factors influence salivary flow rates." The list is organized into two columns, each item preceded by a water droplet icon, detailing various factors such as circannual rhythm, circadian rhythm, hydration, emotional state, light exposure, body position, mechanical stimuli, vomiting, gustatory and olfactory stimuli, and gland size. This visual serves as an informational diagram explaining the factors affecting saliva production. ```markdown # Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size ```  #### Primary Influencing Factors - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size A blue slide titled 'Saliva' listing factors that influence salivary flow rates, including circannual rhythm, circadian rhythm, hydration, emotional state, light exposure, body position, mechanical stimuli, vomiting, gustatory and olfactory stimuli, and gland size. The text is organized in two columns with bullet points and small water droplet icons. # Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - **Degree of hydration** - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size  #### Focus: Hydration - Circannual rhythm - Circadian rhythm - **Degree of hydration** - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size The image displays a list of factors influencing salivary flow rates, presented in a two-column format with bullet points. The left column includes 'Circannual rhythm', 'Circadian rhythm', 'Degree of hydration', 'Emotional state', 'Exposure to light', and 'Body position'. The right column lists 'Mechanical stimuli', 'Vomiting', 'Gustatory and olfactory stimuli', and 'Gland size'. The text is presented on a blue background with white and orange text, and the title 'Saliva' is highlighted in yellow. ```markdown Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - Degree of hydration - **Emotional state** - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size ```  #### Focus: Emotional State - Circannual rhythm - Circadian rhythm - Degree of hydration - **Emotional state** - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size The image displays a slide titled "Saliva" with a list of factors influencing salivary flow rates. The factors are presented in two columns with bullet points, including circannual rhythm, circadian rhythm, degree of hydration, emotional state, exposure to light, body position, mechanical stimuli, vomiting, gustatory and olfactory stimuli, and gland size. The text is arranged in a clear, organized manner on a blue background with yellow and white text. ```markdown # Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size ```  #### Primary Influencing Factors - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size A bulleted list titled 'Saliva' detailing factors that influence salivary flow rates, presented in two columns with light blue text on a dark blue background. The list includes circannual rhythm, circadian rhythm, degree of hydration, emotional state, exposure to light, body position, mechanical stimuli, vomiting, gustatory and olfactory stimuli, and gland size. The text is organized with bullet points, and the word 'Exposure to light' is highlighted in orange. # Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size  #### Primary Influencing Factors - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size The image displays a slide titled "Saliva" with a list of factors influencing salivary flow rates. The factors are presented in two columns, each item preceded by a droplet icon, and include circannual rhythm, circadian rhythm, degree of hydration, emotional state, exposure to light, body position, mechanical stimuli, vomiting, gustatory and olfactory stimuli, and gland size. The text is organized in a clear, bullet-point format on a blue background. ```markdown # Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size ```  #### Categorized Influencing Factors - **Biological Rhythms and States** - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - **Stimuli and Physical Attributes** - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size A blue slide with a list of factors influencing salivary flow rates, presented in two columns with bullet points and water droplet icons. The title 'Saliva' is in yellow at the top, followed by the heading 'Factors influence salivary flow rates' in white. The left column includes factors like circannual rhythm, circadian rhythm, and hydration, while the right column lists mechanical stimuli, vomiting, gustatory and olfactory stimuli, and gland size. The text is organized in a clear, educational format suitable for a presentation. ```markdown Saliva - Factors influence salivary flow rates - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size ```  #### Primary Influencing Factors - Circannual rhythm - Circadian rhythm - Degree of hydration - Emotional state - Exposure to light - Body position - Mechanical stimuli - Vomiting - Gustatory and olfactory stimuli - Gland size A blue slide with a list of factors influencing salivary flow rates, including circannual rhythm, circadian rhythm, hydration, emotional state, light exposure, body position, mechanical stimuli, vomiting, gustatory and olfactory stimuli, and gland size. The text is organized in two columns with bullet points and small water droplet icons next to each factor. ```markdown **Saliva** - Salivary composition will also vary! ``` In addition to flow rates, the chemical and organic composition of saliva will also vary based on these influencing factors. **Significance......?** - ?? Value of a single point in time assessment - Salivary flow rate measurements need standardization #### Challenges in Salivary Evaluation Assessing salivary function presents several clinical challenges regarding the interpretation of data: - **Value of Single-Point Assessments**: There is limited diagnostic value in a single point-in-time assessment, as salivary flow can fluctuate. - **Need for Standardization**: Salivary flow rate measurements require standardized protocols to ensure accuracy and reproducibility across different clinical settings. ```markdown Significance......? - What is normal? ``` ```html <table border="1" cellpadding="5" cellspacing="0"> <tr> <td><img src="https://i.imgur.com/placeholder1.jpg" alt="Dental view showing teeth with fillings and some decay"/></td> <td><img src="https://i.imgur.com/placeholder2.jpg" alt="Dental view showing teeth with significant decay"/></td> </tr> </table> ```    #### Defining Normal Parameters A primary concern in clinical assessment is establishing a baseline for healthy function: - **Determining Normalcy**: Defining what constitutes a "normal" salivary flow rate is complex due to individual biological variation. - **Clinical Presentation**: Observations of dental health, including the presence of restorations and the progression of decay, serve as indicators of the long-term impact of salivary flow on oral health. The image contains two dental photographs comparing teeth with fillings and some decay to teeth with significant decay, illustrating the concept of dental health and the significance of normal versus abnormal conditions. A close-up photo of a mouth showing teeth with fillings and some decay, used to illustrate the concept of dental health and what constitutes normal versus abnormal conditions. A close-up photo of a mouth showing teeth with significant decay, used to illustrate the concept of dental health and what constitutes normal versus abnormal conditions.    Close-up photo of a patient's mouth showing dry mouth symptoms, including a dry, reddish tongue and visible dental work such as crowns and fillings. The image illustrates the condition of the oral cavity in a patient with dry mouth. Photo of an oral cavity with severe dry mouth, showing a dry, inflamed mucosa with yellowish deposits and darkened teeth. The image highlights the effects of reduced saliva production on oral health. Close-up photo of a dry, cracked tongue with a reddish, atrophic appearance, characteristic of dry mouth. The image emphasizes the texture and condition of the tongue in a patient with reduced salivary flow. What is dry mouth? - Xerostomia - Salivary gland hypofunction - Hyposalivation  Dry mouth is a complex condition that can be categorized into three distinct clinical observations: - **Xerostomia** - **Salivary gland hypofunction** - **Hyposalivation** A diagram illustrating the definitions of dry mouth, showing three terms: 'Xerostomia', 'Salivary gland hypofunction', and 'Hyposalivation', each marked with a checkmark inside an oval shape. The diagram is presented on a blue background with colorful text and is related to the question 'What is dry mouth?' at the top. ```markdown What is dry mouth? - **Xerostomia** - *subjective* experience of oral dryness ```  #### Subjective Experience - **Xerostomia**: The subjective experience or symptom of oral dryness as reported by the patient. A speaker icon with sound waves, indicating audio playback, located in the bottom right corner of the slide. ```markdown What is dry mouth? - Salivary gland hypofunction - diminished salivary flow and is based on **objective** measures of saliva production - Unstimulated whole saliva 0.1-0.3ml/min (Normal >0.3) - Stimulated whole saliva 1-0.7 ml/min (Normal >1) ``` #### Objective Measures of Hypofunction Salivary gland hypofunction refers to diminished salivary flow and is based on objective measures of saliva production. Clinical thresholds include: - **Unstimulated whole saliva**: 0.1–0.3 ml/min (Normal is >0.3 ml/min) - **Stimulated whole saliva**: 0.7–1.0 ml/min (Normal is >1.0 ml/min) ```markdown What is dry mouth? - Hyposalivation – low end of salivary gland hypofunction (pathologically low) - Unstimulated whole saliva ≤0.1ml/min (Normal >0.3) - Stimulated whole saliva ≤0.5-0.7 ml/min (Normal >1) ``` #### Pathologically Low Flow Hyposalivation represents the low end of salivary gland hypofunction, characterized by pathologically low flow rates: - **Unstimulated whole saliva**: ≤0.1 ml/min (Normal is >0.3 ml/min) - **Stimulated whole saliva**: ≤0.5–0.7 ml/min (Normal is >1.0 ml/min) What is dry mouth? * Salivary flow rates necessary for oral health are individual specific * Change may be more important  #### Individual Variability - Salivary flow rates necessary for maintaining oral health are specific to the individual. - A change in flow rate for a specific patient may be more clinically significant than the absolute volume. Illustration of a person with red hair and an orange jacket standing in front of a crowd of people, used to visually represent the concept of individuality in the context of dry mouth and salivary flow rates. ```markdown What is dry mouth? - What is the relationship between salivary gland hypofunction, hyposalivation and xerostomia? → **Not just a question of volume!** ``` #### Clinical Relationship When evaluating the relationship between salivary gland hypofunction, hyposalivation, and xerostomia, it is important to note that the condition is not just a question of volume. What is dry mouth? - SGH / hyposalivation ≠ xerostomia  #### Diagnostic Distinction Salivary gland hypofunction (SGH) and hyposalivation are not equivalent to xerostomia. One is an objective finding, while the other is a subjective symptom. A photo showing an apple and an orange placed side by side on a white surface, with a blue background. The image is used to visually represent the concept of dry mouth, contrasting the textures and appearances of the fruits. What is dry mouth? - Prevalence of hyposalivation: 20% - Prevalence of xerostomia: 23% #### General Prevalence Rates - **Prevalence of hyposalivation**: 20% - **Prevalence of xerostomia**: 23% ```markdown What is dry mouth? - Prevalence of hyposalivation: 20% - Prevalence of xerostomia: 23% - Hyposalivation & xerostomia: 2-6% ```  #### Statistical Overlap - **Prevalence of hyposalivation**: 20% - **Prevalence of xerostomia**: 23% - **Combined hyposalivation and xerostomia**: 2–6% A bullet-point list on a blue background detailing the prevalence of dry mouth conditions: hyposalivation at 20%, xerostomia at 23%, and both conditions together at 2-6%. The text is presented in white and yellow font with red square bullet points. # The dry mouth patient - Hyposalivation and xerostomia  #### Patient Profile: Combined Presentation This patient profile includes individuals experiencing both objective hyposalivation and the subjective symptom of xerostomia. Close-up photo of a dry, red tongue with visible papillae, illustrating the condition of xerostomia. The image is presented in the context of discussing hyposalivation and xerostomia in the dry mouth patient. The dry mouth patient - Hyposalivation minus xerostomia  #### Patient Profile: Objective Only This profile describes patients with objective hyposalivation who do not report the subjective feeling of xerostomia. A close-up photo of a patient's mouth showing teeth and gums, illustrating a dry mouth condition. The image highlights the oral cavity with visible teeth and surrounding tissue, relevant to the topic of hyposalivation and xerostomia discussed in the text. The dry mouth patient - Xerostomia *minus* Hyposalivation  #### Patient Profile: Subjective Only This profile describes patients who report the subjective symptom of xerostomia but do not demonstrate objective hyposalivation. A close-up intraoral photo showing a patient's mouth with visible dental restorations, including a gold crown and amalgam fillings, illustrating a dry mouth condition. The tongue appears dry and slightly reddened, consistent with xerostomia and hyposalivation as mentioned in the text. **Causes of hyposalivation and xerostomia**   An analysis of the underlying causes and etiologies associated with both hyposalivation (objective reduced flow) and xerostomia (subjective dryness). Close-up photo of a patient's mouth showing severe dental caries and tooth decay, illustrating the effects of hyposalivation and xerostomia on oral health. Another close-up photo of a patient's mouth with extensive tooth decay and poor oral hygiene, demonstrating the consequences of reduced salivary flow. ```markdown Causes of hyposalivation and xerostomia - Medications - Disease - Radiation therapy to the head and neck - Other ```  The development of hyposalivation and xerostomia is typically attributed to several primary factors: - Medications - Systemic diseases - Radiation therapy to the head and neck - Other physiological or environmental factors A blue slide with yellow text titled 'Causes of hyposalivation and xerostomia' lists four bullet points: Medications, Disease, Radiation therapy to the head and neck, and Other. The slide includes a small speaker icon in the bottom right corner. ## Causes of hyposalivation and xerostomia - Medication - Anticholinergics - Sympathomimetics - Other - Note polypharmacy! <img src="https://i.imgur.com/placeholder_image.png" alt="Hand holding pills"/>  #### Pharmacological Influences Medication use is a leading cause of dry mouth. Specific drug classes associated with these symptoms include: - Anticholinergics - Sympathomimetics - Other various drug classes #### Polypharmacy Considerations It is critical to note the impact of polypharmacy. The risk and severity of hyposalivation often increase significantly with the number of concurrent medications a patient is taking. A photograph of a hand holding several white pills, illustrating the topic of medication as a cause of hyposalivation and xerostomia. The image is positioned next to a list of drug categories, including anticholinergics and sympathomimetics, emphasizing the role of medications in causing dry mouth. # Causes of hyposalivation and xerostomia ## - Disease ### Autoimmune / chronic inflammatory disease - Sjögren’s syndrome - Systemic lupus erythematosus - Rheumatoid arthritis - Systemic sclerosis (scleroderma) - Mixed connective tissue disease - Primary biliary cirrhosis - Sarcoidosis - Graft versus host disease - Inflammatory bowel disease ### Endocrine / metabolic disorders - Diabetes mellitus I and II - Diabetes insipidus - Hypothyroidism - End-stage renal disease - Eating disorders - Malnutrition - Alcohol abuse ### Neurological / behavioural / psychiatric disorders - Cerebral palsy - Parkinson’s disease - Alzheimer’s disease - Anxiety - Depression ### Genetic - Salivary gland aplasia - Ectodermal dysplasia - Cystic fibrosis ### Infectious diseases - HIV / AIDS - HCV - EBV / CMV ### Other - GERD - Hypertension - Amyloidosis  #### Autoimmune and Chronic Inflammatory Diseases - Sjögren’s syndrome - Systemic lupus erythematosus - Rheumatoid arthritis - Systemic sclerosis (scleroderma) - Mixed connective tissue disease - Primary biliary cirrhosis - Sarcoidosis - Graft versus host disease - Inflammatory bowel disease #### Endocrine and Metabolic Disorders - Diabetes mellitus (Type I and II) - Diabetes insipidus - Hypothyroidism - End-stage renal disease - Eating disorders - Malnutrition - Alcohol abuse #### Neurological, Behavioural, and Psychiatric Disorders - Cerebral palsy - Parkinson’s disease - Alzheimer’s disease - Anxiety - Depression #### Genetic Conditions - Salivary gland aplasia - Ectodermal dysplasia - Cystic fibrosis #### Infectious Diseases - HIV / AIDS - Hepatitis C Virus (HCV) - Epstein-Barr Virus (EBV) / Cytomegalovirus (CMV) #### Other Systemic Conditions - Gastroesophageal reflux disease (GERD) - Hypertension - Amyloidosis A small icon of a speaker with sound waves, likely indicating an audio feature or alert related to the content on the slide. # Causes of hyposalivation and xerostomia - Radiation therapy - Radiation therapy to the head and neck - Radioactive iodine  #### Radiation Exposure Direct damage to salivary gland tissue can occur through medical treatments involving radiation: - Radiation therapy targeted to the head and neck region - Radioactive iodine therapy A medical imaging scan, likely a CT or MRI, showing a cross-sectional view of the head with multiple colored contour lines indicating radiation dose distribution. The image includes a legend on the left side listing absolute dose values in cGy, ranging from 4500.0 to 6848.0 cGy, corresponding to the colored lines on the scan. # Causes of hyposalivation and xerostomia - Menopause - Post menopausal women often complain of xerostomia → Changes in salivary flow rates → Composition changes - HRT may improve xerostomia #### Menopause and Hormonal Changes Post-menopausal women frequently report symptoms of xerostomia. These complaints are often linked to: - Changes in salivary flow rates - Alterations in salivary composition Hormone Replacement Therapy (HRT) may provide improvement for xerostomia in this population. # Causes of hyposalivation and xerostomia - Ageing - Structural salivary gland changes - Salivary changes → Flow rate → Composition #### Age-Related Changes The aging process can lead to various alterations in salivary function, including: - Structural changes within the salivary glands - Salivary modifications: - Reduced flow rates - Changes in chemical composition # Implications of hyposalivation and xerostomia - Generalized oral discomfort - Difficulty tolerating dentures - Dysphonia - Dysphagia - Dysgeusia - Sleep disturbances Hyposalivation and xerostomia lead to a variety of clinical challenges that affect daily function and comfort: - Generalized oral discomfort - Difficulty tolerating dentures - Dysphonia (difficulty speaking) - Dysphagia (difficulty swallowing) - Dysgeusia (impaired sense of taste) - Sleep disturbances # Implications of hyposalivation and xerostomia - **Halitosis** - **Mucosal disease** <img src="https://i.imgur.com/8X9zJ7l.jpg" alt="Image showing a close-up of a tongue with visible coating, illustrating halitosis."/> <img src="https://i.imgur.com/9Ym5d3L.jpg" alt="Image showing an inflamed oral mucosa with white patches, illustrating mucosal disease."/> --- *Note: The speaker icon in the top right corner is not transcribed as it is not text.*   #### Impact on Oral Tissues and Breath The reduction in salivary flow contributes significantly to the following conditions: - **Halitosis**: Chronic bad breath resulting from the lack of salivary cleansing action. - **Mucosal disease**: Increased vulnerability of the oral soft tissues to inflammation and infection. A close-up photo of a tongue with a visible coating, illustrating halitosis as a consequence of hyposalivation and xerostomia. A close-up photo of inflamed oral mucosa with white patches, illustrating mucosal disease as a consequence of hyposalivation and xerostomia. **Implications of hyposalivation and xerostomia** - Sialadentitis - GORD <img src="https://i.imgur.com/placeholder.jpg" alt="Oral cavity showing signs of xerostomia with visible teeth and oral mucosa." />  #### Inflammatory and Gastric Complications - **Sialadenitis**: Inflammation of the salivary glands, often due to reduced flow and subsequent infection. - **GORD**: Gastro-oesophageal reflux disease, which can be exacerbated by the lack of acid-neutralizing saliva. A close-up photograph of the oral cavity showing signs of xerostomia, with visible teeth, dry mucosa, and inflammation. The image illustrates the clinical implications of hyposalivation and xerostomia, including potential complications like sialadenitis and GORD. Implications of hyposalivation and xerostomia - Dental caries and non-carious tooth loss - Periodontal disease   #### Dental and Periodontal Health Saliva plays a critical role in protecting the hard tissues of the mouth. Its absence leads to: - **Dental caries and non-carious tooth loss**: Increased risk of decay and tooth wear (erosion/attrition) due to the loss of remineralization and buffering capacity. - **Periodontal disease**: Greater susceptibility to gum disease and supporting tissue loss. A photo showing a mouth with healthy teeth and gums, illustrating the initial state before dental caries and non-carious tooth loss. A photo showing a mouth with severe dental caries and tooth decay, illustrating the progression of dental issues due to hyposalivation and xerostomia. Implications of hyposalivation and xerostomia | Systemic effects | Impaired nutrition | | --- | --- | | | Depression and withdrawal | Decreased life quality  #### Systemic and Psychosocial Impact The consequences of dry mouth extend beyond the oral cavity, affecting overall well-being and mental health: - **Impaired nutrition**: Difficulty in chewing and swallowing can lead to poor dietary intake. - **Depression and withdrawal**: Social anxiety and psychological distress resulting from oral discomfort and communication difficulties. - **Decreased life quality**: A cumulative reduction in the patient's overall standard of living and daily satisfaction. A flowchart diagram illustrating the implications of hyposalivation and xerostomia, showing two main pathways: 'Systemic effects' leading to 'Impaired nutrition' and 'Depression and withdrawal', and a direct pathway to 'Decreased life quality'. ```markdown Diagnosis - Medical history - Dental History - Clinical examination ```  The diagnostic process for dry mouth involves a comprehensive review of the patient's status through several key stages: - Medical history - Dental history - Clinical examination A close-up photograph of a patient's open mouth during a dental examination, showing teeth, gums, and a dental mirror held by a gloved hand. The image is positioned next to a slide titled 'Diagnosis' with bullet points listing 'Medical history', 'Dental History', and 'Clinical examination'. **Diagnosis** <img src="https://i.imgur.com/5ZzJjzL.jpg" alt="Close-up view of the oral cavity showing the uvula and surrounding tissues, with visible teeth and dental restorations."/>  #### Visual Assessment of Oral Tissues Clinical examination includes a close-up inspection of the oral cavity, focusing on the uvula, surrounding soft tissues, and the condition of existing dental restorations. Close-up view of the oral cavity showing the uvula and surrounding tissues, with visible teeth and dental restorations. The image highlights a red, swollen area near the base of the uvula, possibly indicating inflammation or a lesion. **Diagnosis** <img src="https://i.imgur.com/9ZjKjzL.png" alt="Two close-up images showing oral examination with dental mirror and probe. Left image shows the oral cavity with a dental mirror reflecting the inner cheek. Right image shows a gloved hand holding a dental probe near the gum line, examining the teeth and surrounding tissue." />   #### Physical Examination Techniques Standard clinical examination procedures utilize: - Dental mirrors to reflect and inspect the inner cheek and buccal mucosa. - Dental probes to examine the gum line and the integrity of the teeth and surrounding tissues. Close-up photograph showing an oral examination with a dental mirror reflecting the inner cheek, illustrating the diagnostic process. Close-up photograph depicting a gloved hand using a dental probe near the gum line, examining teeth and surrounding tissue during a diagnosis. ```markdown **Diagnosis** <img src="https://i.imgur.com/placeholder.jpg" alt="Oral cavity showing red, inflamed tissue near the gum line." /> <img src="https://i.imgur.com/placeholder.jpg" alt="Close-up of the tongue and lower teeth, showing the oral mucosa." /> ```   #### Mucosal Observations Examination focuses on identifying clinical signs of dryness or inflammation, such as: - Red, inflamed tissue near the gum line. - The appearance and hydration of the tongue and lower oral mucosa. A close-up photograph of the oral cavity showing red, inflamed tissue near the gum line, with a visible lesion on the inner cheek. The image is part of a diagnosis section, highlighting abnormal mucosal changes. A detailed photograph of the tongue and lower teeth, showing the oral mucosa with a reddish, inflamed appearance. The image is used to illustrate clinical findings during a diagnosis. ```markdown # Diagnosis - Investigations <img src="https://i.imgur.com/placeholder.jpg" alt="Three blood collection tubes"/> Sreebny LM, Vissink A 2010 <!-- Flowchart as HTML Table --> <table border="1" cellpadding="5" cellspacing="0" style="border-collapse: collapse; width: 100%; table-layout: fixed;"> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>Dry mouth<br>(xerostomia)</strong></td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>Low salivary<br>flow rate<br>(sialometry)</strong></td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>No</strong></td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Consider oral candidosis, drug-induced salivary compositional changes, mineral deficiency, inflammatory bowel disease, burning mouth syndrome, early (non-fulminant) systemic disease, psychogenic condition</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>Yes</strong></td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>Low unstimulated and (sub)normal stimulated salivary flow rate, no or negligible salivary compositional changes</strong></td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>Consider history of<br>systemic disease</strong></td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>Consider daily<br>drug intake,<br>polypharmacy</strong></td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>General clinical signs and symptoms:</strong></td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;"><strong>Suggestive of:</strong></td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Malaise, fatigue, intermittent fever, ocular dryness, enlargement of major salivary glands, mucocutaneous and genital dryness/rashes/ulceration, Raynaud's phenomenon, arthralgia, polyarthritis, muscle weakness/pain, anemia, weight loss, gastrointestinal dysfunction</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Inflammatory connective tissue diseases</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Abdominal cramps/pain, diarrhea or constipation, weight loss, retarded growth, intestinal bleeding, arthralgia</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Inflammatory bowel diseases</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Fatigue, enlarged liver, jaundice, itching, skin rashes, spider angiomas, abdominal discomfort, loss of appetite, nausea, vomiting, dark urine, pale or grey colored feces, enlargement of major salivary glands, symptoms of multisystem involvement</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Autoimmune liver diseases</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Arthralgia of one or multiple joints, muscle weakness/pain, point tenderness, morning stiffness, fatigue, malaise, intermittent fever, gastrointestinal dysfunction, weight loss, Raynaud's phenomenon, peripheral neuropathy, disturbed sleep, headache, shortness of breath</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Musculoskeletal disorders</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Fever, malaise, fatigue, pain, swollen lymph glands, weight loss, enlargement of major salivary glands, epidemiological considerations of infectious exposure</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Infectious diseases</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Fatigue, weakness, weight gain or weight loss, muscle cramps and frequent muscle aches, diarrhea or constipation, edema, depression, abnormal menstrual cycles, dehydration, enlargement of major salivary glands</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Endocrine and metabolic disorders<br>Eating disorders</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Tremor, rigid muscles, impaired coordination or balance, exaggerated reflexes, paralysis, weakness, difficulty in swallowing, drooling, speech difficulties, orofacial paraesthesia, taste disturbances, dementia</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Neurological disorders</td> </tr> <tr> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Varying degrees of hypodontia, decreased sweating, ocular dryness, major salivary gland hypoplasia or aplasia, thin skin, decreased pigmentation, sparse hair, abnormal nails, low nasal bridge (symptoms applies to ectodermal dysplasia). Cystic fibrosis and Prader-Willi syndrome are generally diagnosed during early childhood</td> <td style="text-align: center; vertical-align: middle; background-color: #ffffff; border: 1px solid #000000; padding: 10px;">Genetic disorders</td> </tr> </table> ```    #### Diagnostic Flowchart for Dry Mouth (Xerostomia) When evaluating a patient for dry mouth, clinicians must determine if there is a low salivary flow rate (sialometry) and consider various underlying causes. **Scenario A: No Low Salivary Flow Rate** If xerostomia is present but flow rates are normal, consider: - Oral candidosis - Drug-induced salivary compositional changes - Mineral deficiency - Inflammatory bowel disease - Burning mouth syndrome - Early (non-fulminant) systemic disease - Psychogenic conditions **Scenario B: Low Unstimulated and (Sub)normal Stimulated Flow Rate** If flow rates are low with negligible compositional changes, consider: - History of systemic disease - Daily drug intake or polypharmacy #### Systemic Disease Indicators | General Clinical Signs and Symptoms | Suggestive Systemic Condition | | :--- | :--- | | Malaise, fatigue, intermittent fever, ocular dryness, major salivary gland enlargement, mucocutaneous/genital dryness, Raynaud's phenomenon, arthralgia, anemia | Inflammatory connective tissue diseases | | Abdominal cramps, diarrhea/constipation, weight loss, retarded growth, intestinal bleeding, arthralgia | Inflammatory bowel diseases | | Fatigue, enlarged liver, jaundice, itching, skin rashes, spider angiomas, nausea, dark urine, pale feces, multisystem involvement | Autoimmune liver diseases | | Joint arthralgia, muscle weakness/pain, morning stiffness, peripheral neuropathy, disturbed sleep, shortness of breath | Musculoskeletal disorders | | Fever, malaise, fatigue, swollen lymph glands, weight loss, salivary gland enlargement, infectious exposure history | Infectious diseases | | Fatigue, weight fluctuations, muscle cramps, edema, depression, abnormal menstrual cycles, dehydration | Endocrine, metabolic, or eating disorders | | Tremor, rigid muscles, impaired coordination, paralysis, swallowing difficulty, drooling, orofacial paraesthesia, taste disturbances | Neurological disorders | | Hypodontia, decreased sweating, salivary gland hypoplasia, thin skin, sparse hair, abnormal nails (e.g., ectodermal dysplasia) | Genetic disorders | Three blood collection tubes with different colored caps (yellow, yellow, and purple) are shown, labeled with 'BD Vacutainer' and other markings, representing samples for diagnosis. A flowchart diagram illustrating diagnostic pathways for dry mouth (xerostomia), guiding clinicians through steps based on salivary flow rate and clinical symptoms to consider various conditions such as inflammatory connective tissue diseases, inflammatory bowel diseases, and autoimmune liver diseases. A table-like structure within the flowchart that lists general clinical signs and symptoms alongside their suggestive conditions, such as malaise and fatigue suggesting inflammatory connective tissue diseases, and abdominal cramps suggesting inflammatory bowel diseases. **Diagnosis** <img src="https://i.imgur.com/6ZJzJzL.jpg" alt="Tongue image showing redness and swelling"/> Western Diagnostic Pathology Report Myaree Telephone: (08) 9317 0999 (all hours) Results Enquiries: 13 61 99 DR A. FRYDRYCH SUITE 3/42-44 PARLIAMENT PLA WEST PERTH 6005 CC Drs: A FRYDRYCH. DOB: Sex: F GENERAL CHEMISTRY (Serum/Plasma) GLUCOSE (Serum) **13.4 mmol/L** (< 5.5) Normal <5.5; Impaired fasting 6.1-6.9; Diabetic >6.9 (F), >11.0 (random) Comment:   #### Laboratory Investigations Clinical findings such as tongue redness and swelling may necessitate pathology testing. **Case Example: General Chemistry (Serum/Plasma)** - **Glucose (Serum):** 13.4 mmol/L (Reference: < 5.5) - **Interpretation:** - Normal: < 5.5 - Impaired fasting: 6.1–6.9 - Diabetic: > 6.9 (Fasting), > 11.0 (Random) A close-up photograph of a human tongue showing redness and swelling, used as part of a diagnosis. The image is labeled 'Diagnosis' and appears to be related to a medical condition indicated by the elevated glucose level in the accompanying report. A laboratory report from Western Diagnostic Pathology displaying a glucose test result of 13.4 mmol/L, which is highlighted as abnormal. The report includes patient details, test type (Glucose Serum), and reference ranges for normal, impaired fasting, and diabetic levels. ```markdown # Diagnosis - Investigations → Sjogren’s Syndrome ## ACR-EULAR Classification Criteria for primary Sjögren’s syndrome (pSS) The classification of SS applies to any individual who meets the inclusion criteria,¹ does not have any condition listed as exclusion criteria,² and who has a score ≥ 4 when summing the weights from the following items: | Item | Weight / Score | |---|---| | Labial salivary gland with focal lymphocytic sialadenitis and focus score ≥ 1.³ | 3 | | Anti-SSA (Ro) + | 3 | | Ocular staining score ≥ 5 (or van Bijsterfeld score ≥ 4) on at least one eye⁴ | 1 | | Schirmer ≤ 5 mm/5min on at least one eye | 1 | | Unstimulated whole saliva flow rate ≤ 0.1 ml/min⁵ | 1 | ¹ Inclusion criteria: these criteria are applicable to any patient with at least one symptom of ocular or oral dryness (defined as a positive response to at least one of the following questions: 1) Have you had daily, persistent, troublesome dry eyes for more than 3 months? 2) Do you have a recurrent sensation of sand or gravel in the eyes? 3) Do you use tear substitutes more than 3 times a day? 4) Have you had a daily feeling of dry mouth for more than 3 months? 5) Do you frequently drink liquids to aid in swallowing dry food?); or suspicion of SS from ESSDAI questionnaire (at least one domain with positive item) ² Exclusion criteria: Prior diagnosis of any of the following conditions would exclude diagnosis of SS and participation in SS studies or therapeutic trials because of overlapping clinical features or interference with criteria tests: - History of head and neck radiation treatment - Active Hepatitis C infection (with positive PCR) - Acquired immunodeficiency syndrome - Sarcoidosis - Amyloidosis - Graft versus host disease - IgG4-related disease Note: Patients who are normally taking anticholinergic drugs should be evaluated for objective signs of salivary hypofunction and ocular dryness after a sufficient interval off these medications for these components to be a valid measure of oral and ocular dryness ³ The histopathologic examination should be performed by a pathologist with expertise in the diagnosis of focal lymphocytic sialadenitis, and focus score count (based on number of foci per 4 mm²) following a protocol described in Daniels et al 2011 (26) ⁴ Ocular staining score described in Whitcher et al 2010 (30). van Bijsterfeld score described in van Bijsterveld 1969 (29) ⁵ Unstimulated whole saliva described in Navazesh & Kumar, 2008 (27) ```  The ACR-EULAR classification applies to individuals meeting inclusion criteria (symptoms of ocular or oral dryness for >3 months or positive ESSDAI questionnaire) and lacking exclusion criteria (e.g., radiation history, Hepatitis C, AIDS, Sarcoidosis, Amyloidosis, GVHD, IgG4-related disease). A score of **≥ 4** is required for classification: | Item | Weight / Score | | :--- | :--- | | Labial salivary gland with focal lymphocytic sialadenitis and focus score ≥ 1 | 3 | | Anti-SSA (Ro) positive | 3 | | Ocular staining score ≥ 5 (or van Bijsterfeld score ≥ 4) on at least one eye | 1 | | Schirmer test ≤ 5 mm/5min on at least one eye | 1 | | Unstimulated whole saliva flow rate ≤ 0.1 ml/min | 1 | **Clinical Notes:** - Patients on anticholinergic drugs should be evaluated after a sufficient interval off medication. - Histopathologic examination requires expertise in focal lymphocytic sialadenitis focus scoring (per 4 mm²). A table titled 'ACR-EULAR Classification Criteria for primary Sjögren's syndrome (pSS)' detailing the classification criteria, including items such as labial salivary gland with focal lymphocytic sialadenitis, anti-SSA (Ro) positivity, ocular staining score, Schirmer test, and unstimulated whole saliva flow rate, each with assigned weights. The table also includes inclusion and exclusion criteria for diagnosis. ```markdown **Diagnosis** - Xerostomia / Salivary gland hypofunction / hyposalivation? ```  #### Distinguishing Subjective and Objective Symptoms Assessment must differentiate between: - **Xerostomia:** The subjective sensation of dry mouth. - **Salivary gland hypofunction / hyposalivation:** The objective reduction in salivary secretion. Close-up photograph of the inside of a mouth showing the oral cavity, with a thin thread or string being used to assess salivary flow, likely as part of a diagnostic procedure for xerostomia or salivary gland hypofunction. ```markdown Diagnosis - Xerostomia Does your mouth usually feel dry? ```  #### Subjective Screening A primary screening question for xerostomia is: - "Does your mouth usually feel dry?" A speaker icon with sound waves, likely indicating an audio feature for the text "Does your mouth usually feel dry?" on a blue background. # Diagnosis - Xerostomia ## The xerostomia inventory (XI) - Original - I sip liquids to aid in swallowing food - My mouth feels dry when eating a meal - I get up at night to drink - My mouth feels dry - I have difficulty in eating dry foods - I suck sweets or cough lollies to relieve dry mouth - I have difficulty swallowing certain foods - The skin of my face feels dry - My eyes feel dry - My lips feel dry - The inside of my nose feels dry **Responses and (scores): Never (1), hardly ever (2), occasionally (3), fairly often (4) and very often (5)** ## The xerostomia inventory (XI) – Shortened version - My mouth feels dry when eating a meal - My mouth feels dry - I have difficulty in eating dry foods - I have difficulty swallowing certain foods - My lips feel dry **Responses and (scores): Never (1), occasionally (2), and often (5)**  #### The Xerostomia Inventory (XI) **Original Version (11 items)** - I sip liquids to aid in swallowing food - My mouth feels dry when eating a meal - I get up at night to drink - My mouth feels dry - I have difficulty in eating dry foods - I suck sweets or cough lollies to relieve dry mouth - I have difficulty swallowing certain foods - The skin of my face feels dry - My eyes feel dry - My lips feel dry - The inside of my nose feels dry *Scoring: Never (1), hardly ever (2), occasionally (3), fairly often (4), and very often (5).* **Shortened Version (5 items)** - My mouth feels dry when eating a meal - My mouth feels dry - I have difficulty in eating dry foods - I have difficulty swallowing certain foods - My lips feel dry *Scoring: Never (1), occasionally (2), and often (5).* The image displays two tables comparing the original and shortened versions of the Xerostomia Inventory (XI). The left table lists the original 10-item inventory with response options scored from 1 to 5, while the right table shows a shortened version with 5 items and response options scored as Never (1), occasionally (2), and often (5). Both tables are presented against a blue background with yellow and white text. # Diagnosis - Salivary gland hypofunction / hyposalivation  #### Objective Assessment Evaluation of salivary gland hypofunction and hyposalivation involves clinical measurements of saliva production. Close-up photograph of a human tongue, showing a dry and cracked surface, which is indicative of salivary gland hypofunction or hyposalivation. The image is presented in the context of a diagnosis slide, highlighting the clinical appearance of reduced saliva production. ```markdown # Diagnosis <table border="1" cellpadding="5" cellspacing="0" style="border-collapse: collapse; width: 100%;"> <tr> <th style="background-color: #f8d7da; text-align: center;">The Challacombe Scale of Oral Dryness</th> </tr> <tr> <td style="background-color: #e3f2fd;">10 features of oral dryness</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ mirror sticks to buccal mucosa</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ mirror sticks to tongue</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ frothy saliva</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ no saliva pooling in floor of mouth</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ tongue shows loss of papillae</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ altered/smooth gingival architecture</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ glassy appearance of other oral mucosa, especially palate</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ tongue lobulated/fissured</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ active or recently restored (last 6 months) cervical caries (2 teeth)</td> </tr> <tr> <td style="background-color: #e3f2fd;">☐ debris on palate (excluding under dentures)</td> </tr> <tr> <td style="background-color: #fce4ec;">Total score 1 – 10:<br>Score 1-3: Mild dryness<br>Score 4-6: Moderate dryness<br>Score 7-10: Severe dryness</td> </tr> </table> ```  #### The Challacombe Scale of Oral Dryness This scale uses 10 clinical features to assess the severity of hyposalivation: - Mirror sticks to buccal mucosa - Mirror sticks to tongue - Frothy saliva - No saliva pooling in floor of mouth - Tongue shows loss of papillae - Altered/smooth gingival architecture - Glassy appearance of other oral mucosa (especially palate) - Tongue lobulated/fissured - Active or recently restored (last 6 months) cervical caries (2 teeth) - Debris on palate (excluding under dentures) **Severity Scoring:** - **1–3:** Mild dryness - **4–6:** Moderate dryness - **7–10:** Severe dryness The Challacombe Scale of Oral Dryness, a table listing 10 features of oral dryness with checkboxes for assessment, including mirror sticking to buccal mucosa, frothy saliva, and altered gingival architecture. The table also provides a scoring system where a total score of 1-3 indicates mild dryness, 4-6 indicates moderate dryness, and 7-10 indicates severe dryness. ```markdown <img src="https://i.imgur.com/1a2b3c4.png" alt="Management slide showing three images: Xerostomia, Hyposalivation, and Xerostomia and hyposalivation."/> **Management** **Xerostomia** **Hyposalivation** **Xerostomia and hyposalivation** ```    The management of dry mouth addresses three clinical presentations: - Xerostomia - Hyposalivation - Combined Xerostomia and hyposalivation A clinical photo showing a patient's mouth with xerostomia, characterized by dry oral mucosa and visible dental restorations, labeled as 'Xerostomia'. A clinical photo of a patient's teeth and gums, illustrating hyposalivation with reduced saliva and visible dental structures, labeled as 'Hyposalivation'. A clinical photo showing a patient's tongue with a dry, rough surface indicative of xerostomia and hyposalivation, labeled as 'Xerostomia and hyposalivation'. ```markdown **Management** - Understand the problem - Address the cause or contributing factors - Symptomatic treatments / commercial saliva substitutes - Stimulation of salivary glands (gustatory / pharmaceutical / mechanical) - Other - Manage associated complications ```  #### Core Management Pillars - Understand the nature of the problem - Address the underlying cause or contributing factors - Utilize symptomatic treatments and commercial saliva substitutes - Implement stimulation of salivary glands (gustatory, pharmaceutical, or mechanical) - Explore other therapeutic modalities - Manage associated clinical complications A blue slide with a bulleted list under the heading 'Management'. The list includes points such as understanding the problem, addressing causes, symptomatic treatments, stimulation of salivary glands, other interventions, and managing associated complications. A small speaker icon is visible on the right side of the slide. **Management – symptomatic treatments** - **Water** → Important to prevent dehydration → Frequent consumption can increase dry mouth symptoms  #### Hydration - **Water** - Crucial for preventing systemic dehydration. - Note: Frequent consumption may paradoxically increase dry mouth symptoms in some contexts. A clear plastic water bottle with a white textured grip and a black carrying loop, filled with water, positioned on the right side of the slide. The bottle is used to visually represent the topic of water consumption in the context of managing dry mouth symptoms. ```markdown Management – symptomatic treatments - Oil - E.g. olive oil <img src="https://i.imgur.com/oliveoil.jpg" alt="A bottle of olive oil with a cork stopper, labeled 'OLIVE OIL'." /> ```  #### Natural Oils - **Oil Application** - Example: Olive oil can be used as a topical lubricant. A photo of a glass bottle filled with yellow olive oil, sealed with a cork stopper, and labeled 'OLIVE OIL'. The bottle is positioned against a plain background, illustrating a typical presentation of olive oil as a symptomatic treatment. ```markdown Management – salivary substitutes | Commercial Salivary Substitutes | |---| | **Saliva Stimulant agent** | | Acid or salt thereof such as citric acid, malic acid, tartaric acid and salts thereof | | **Buffering agent** | | Neutralizer such as potassium hydroxide; Phosphate buffers such as disodium phosphate | | **Thickening agent** | | Hydrocolloids such as xanthan, guar gum, | | Glycerine; Water-soluble polymers such as guar gum, HA, PAA and CMC; Sugar alcohols such as xylitol, erythritol, sorbitol | | **Moisturizing agent** | | **Adhesive agent** | | Natural polysaccharides such as guar gum and HA; Semisynthetic polymers such as CMC; Synthetic polymers such as PAA; Thiolated polymers; | | **Lubricating agent** | | Mucin; Glycerine; Polyethylene glycol (PEG); Cellulose-based polymer; Water-soluble polymers like carrageenan, xanthan gum | | **Optional agent** | | Sweetener such as sorbitol; Cool sensation agent such as l-menthol; Surfactant; Colorant; Preservative | | **Biological Effect agent** | | Decrease dental caries such as xylitol; Anti-cariogenic ingredient such as fluoride; Anti-inflammatory components such as lactoferrin | Hu J et al 2020 ```  #### Composition of Commercial Salivary Substitutes | Agent Category | Examples and Components | | :--- | :--- | | **Saliva Stimulant** | Citric acid, malic acid, tartaric acid and their salts | | **Buffering Agent** | Potassium hydroxide; Phosphate buffers (e.g., disodium phosphate) | | **Thickening Agent** | Hydrocolloids (xanthan, guar gum); Glycerine; Water-soluble polymers (HA, PAA, CMC); Sugar alcohols (xylitol, erythritol, sorbitol) | | **Moisturizing Agent** | Glycerine; Water-soluble polymers (guar gum, HA, PAA, CMC); Sugar alcohols | | **Adhesive Agent** | Natural polysaccharides (guar gum, HA); Semisynthetic polymers (CMC); Synthetic polymers (PAA); Thiolated polymers | | **Lubricating Agent** | Mucin; Glycerine; Polyethylene glycol (PEG); Cellulose-based polymers; Carrageenan, xanthan gum | | **Biological Effect** | Xylitol (caries reduction); Fluoride (anti-cariogenic); Lactoferrin (anti-inflammatory) | | **Optional Agents** | Sweeteners (sorbitol); Cooling agents (l-menthol); Surfactants; Colorants; Preservatives | A circular diagram illustrating the components of commercial salivary substitutes, categorized into eight sections: Saliva Stimulant agent, Buffering agent, Thickening agent, Moisturizing agent, Adhesive agent, Lubricating agent, Optional agent, and Biological Effect agent. Each section lists specific ingredients such as citric acid, potassium hydroxide, xanthan gum, glycerine, mucin, sweeteners, and fluoride, with the central label indicating 'Commercial Salivary Substitutes'. ```html <table border="1" cellpadding="5" cellspacing="0" style="border-collapse: collapse; width: 100%; font-family: Arial, sans-serif; border: 1px solid #000; background-color: #0000FF;"> <tr> <td colspan="3" style="text-align: center; font-size: 28px; font-weight: bold; color: #FFFF00;">Management – salivary substitutes</td> </tr> <tr> <td colspan="3" style="text-align: center; padding: 20px; background-color: #FFFFFF; border: 2px solid #000;"> <table border="0" cellpadding="5" cellspacing="0" style="width: 100%; border-collapse: collapse;"> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Commercial<br>Salivary<br>Substitutes </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Saliva<br>Stimulant<br>agent </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Buffering<br>agent </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Thickening<br>agent </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Moisturizing<br>agent </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Biological<br>Effect<br>agent </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Optional<br>agent </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Lubricating<br>agent </td> </tr> <tr> <td style="text-align: center; font-weight: bold; vertical-align: middle; background-color: #FFFFFF; border: 1px solid #000;"> Adhesive<br>agent </td> </tr> </table> </td> </tr> <tr> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Acid or salt thereof<br>such as citric acid, malic<br>acid, tartaric acid and<br>sals thereof </td> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Neutralizer such<br>as potassium<br>hydroxide;<br>Phosphate buffers<br>such as disodium<br>phosphate </td> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Hydrocolloids<br>such as xanthan,<br>guar gum, </td> </tr> <tr> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Glycerine; Water-soluble<br>polymers such as guar<br>gum, HA, PAA and CMC;<br>Sugar alcohols such as<br>xylitol, erythritol, sorbitol </td> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Decrease dental caries<br>such as xylitol; Anti-cariogenic<br>ingredient such as fluoride;<br>Anti-inflammatory<br>components such as<br>lactoferrin </td> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Sweetener such as<br>sorbitol; Cool sensation<br>agent such as l-menthol;<br>Surfactant; Colorant;<br>Preservative </td> </tr> <tr> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Natural polysaccharides<br>such as guar gum and HA;<br>Semisynthetic polymers<br>such as CMC; Synthetic polymers<br>such as PAA; Thiolated<br>polymers; </td> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> Mucin;<br>Glycerine;<br>Polyethylene glycol (PEG);<br>Cellulose-based<br>polymer; Water-soluble<br>polymers like carrageenan,<br>xanthan gum </td> <td style="text-align: left; vertical-align: top; background-color: #FF0000; border: 1px solid #000; padding: 10px;"> (No text) </td> </tr> <tr> <td colspan="3" style="text-align: center; padding: 10px; font-size: 14px; color: #FFFF00;"> Hu J et al 2020 </td> </tr> </table> ```    #### Functional Components of Substitutes - **Stimulants and Buffers**: Acids (citric/malic) to prompt flow and neutralizers (potassium hydroxide/phosphates) to maintain pH. - **Textural Agents**: Hydrocolloids like xanthan and guar gum provide necessary thickness. - **Protective Agents**: - Biological ingredients such as fluoride for anti-caries and lactoferrin for inflammation. - Adhesives like CMC and PAA to ensure tissue coating. - **Sensory/Stability Agents**: Menthol for cooling sensations and various preservatives/colorants for product stability. A circular diagram illustrating the components of commercial salivary substitutes, with a central label 'Commercial Salivary Substitutes' and eight surrounding segments detailing different agents such as salivary stimulant, buffering, thickening, moisturizing, biological effect, optional, lubricating, and adhesive agents. Each segment lists specific examples of compounds used, such as citric acid, xanthan gum, and xylitol. A detailed diagram showing the composition of commercial salivary substitutes, categorized into eight types of agents including salivary stimulant, buffering, thickening, moisturizing, biological effect, optional, lubricating, and adhesive agents, with specific examples listed for each category. A radial chart detailing the various components of commercial salivary substitutes, with a central hub labeled 'Commercial Salivary Substitutes' and eight surrounding segments representing different agent types such as salivary stimulant, buffering, thickening, and more, each with specific examples listed. ```markdown **Management – salivary substitutes** - Thickening agents – increase product viscosity e.g. hydroxyethyl cellulose - Lubricating agents – protect mucosal surfaces e.g. animal derived mucin, glycerine, polyethylene glycol, other ``` #### Viscosity and Protection - **Thickening Agents** - Used to increase product viscosity. - Example: Hydroxyethyl cellulose. - **Lubricating Agents** - Designed to protect mucosal surfaces. - Examples: Animal-derived mucin, glycerine, and polyethylene glycol. ```markdown Management – salivary substitutes - Adhesive agents – facilitate formation of a coating to protect oral tissues from irritation (natural / semi-synthetic / synthetic) - Moisturising agents – e.g. carboxymethyl cellulose ``` #### Tissue Coating and Moisture - **Adhesive Agents** - Facilitate the formation of a protective coating to shield oral tissues from irritation. - Types: Natural, semi-synthetic, and synthetic polymers. - **Moisturising Agents** - Example: Carboxymethyl cellulose (CMC). ```markdown Management – salivary substitutes - Other agents → Antimicrobial proteins (e.g., lysozyme, lactoferrin and lactoperoxidase) → Buffering agents → Anti-cariogenic agents → Salivary stimulants → Other ``` #### Supplemental Additives - **Antimicrobial Proteins**: Lysozyme, lactoferrin, and lactoperoxidase. - **Buffering Agents**: To stabilize oral pH. - **Anti-cariogenic Agents**: To prevent tooth decay. - **Salivary Stimulants**: Integrated agents to encourage natural flow. **Management – salivary substitutes** <img src="https://i.imgur.com/1ZzZzZz.png" alt="Diagram of a salivary substitute device with labeled parts: Vent hole, Base plate, Elastic diaphragm, Acrylic to hold the coil, Stainless steel coil, Stainless steel ball, Valve opening, Ball-valve system, Oral-balance gel. Caption: Kam AYL et al 2005"/> <img src="https://i.imgur.com/2ZzZzZz.png" alt="Photograph of a physical salivary substitute device with teeth and a central ball-valve system."/>   #### Mechanical Delivery Systems Research has explored specialized devices for delivering salivary substitutes, such as intraoral reservoirs featuring: - Ball-valve systems (stainless steel ball and coil) - Elastic diaphragms and vent holes - Integration with oral-balance gels A labeled diagram of a salivary substitute device showing components such as the vent hole, base plate, elastic diaphragm, acrylic to hold the coil, stainless steel coil, stainless steel ball, valve opening, and oral-balance gel. The diagram illustrates the ball-valve system and is cited as Kam AYL et al 2005. A photograph of a physical salivary substitute device resembling a dental appliance with a central ball-valve system, placed on a teal surface. The device includes artificial teeth and a transparent section revealing the internal mechanism. **Management – salivary substitutes** - Limitations: → Limited duration of action → Specific environmental conditions → Cost #### Limitations of Substitutes - Limited duration of action (requires frequent reapplication) - Performance dependency on specific environmental conditions - Financial cost to the patient # Management – salivary substitutes - In summary: - Limited evidence that salivary substitutes are of benefit - Should be offered  #### Clinical Summary - There is currently limited evidence that salivary substitutes provide significant objective benefit. - Despite limited evidence, they should still be offered as a management option for patient comfort. A speaker icon with sound waves, likely indicating an audio feature or note, located on the right side of the slide. ```markdown Management – salivary stimulation - Chewing sugar-free gum - Can increase unstimulated salivary flow rate - Can provide relief from xerostomia ```  #### Mechanical Stimulation - **Chewing Sugar-Free Gum** - Can effectively increase the unstimulated salivary flow rate. - Provides symptomatic relief from xerostomia. A photo of a woman with gray hair chewing sugar-free gum, illustrating the management of xerostomia through salivary stimulation. The image is positioned next to text highlighting the benefits of chewing gum for increasing salivary flow rate. **Management – salivary stimulation** - Sugar-free confections - Limited literature - Sugar substitutes are not all the same (sorbitol, mannitol) - Note addition of acids to improve taste (dental erosion risk) #### Gustatory Stimulation - **Sugar-Free Confections** - Literature regarding efficacy is limited. - Different sugar substitutes (sorbitol vs. mannitol) have varying properties. - **Caution**: Many products contain added acids for flavor, which increases the risk of dental erosion. # Management – salivary stimulation - Secretogogues - Pilocarpine (cholinergic parasympathomimetic agent, acting as a non-selective muscarinic agonist) - Cevimeline - Other #### Pharmacological Secretogogues - **Pilocarpine**: A cholinergic parasympathomimetic agent that acts as a non-selective muscarinic agonist. - **Cevimeline**: An alternative muscarinic agonist. - Other emerging pharmaceutical agents. ```markdown Management – salivary stimulation - Salivary neuro-electrostimulation → TENS (Transcutaneous Electric Nerve Stimulation) → Intraoral electrostimulators 1. Removable 2. Fixed (Implant supported) ```  #### Electrical Stimulation Modalities - **TENS**: Transcutaneous Electric Nerve Stimulation. - **Intraoral Electrostimulators**: 1. Removable devices. 2. Fixed (Implant-supported) devices. A small speaker icon with sound waves emanating from it, located on the right side of the slide. This icon likely indicates an audio component or sound-related feature associated with the content about salivary neuro-electrostimulation. ```markdown Management – salivary stimulation - Salivary neuro-electrostimulation → TENS (Transcutaneous Electric Nerve Stimulation) → ALTENS (Acupuncture-like TENS) <img src="https://i.imgur.com/placeholder.png" alt="Figure showing acupuncture points for salivary stimulation: A) body points (CV24, LI4, St36, Sp6); B) and C) head points for ALTENS"/> ```  #### Advanced Nerve Stimulation - **ALTENS (Acupuncture-like TENS)**: Combines electrical stimulation with acupuncture principles. - **Target Points**: Stimulation often targets body points (CV24, LI4, St36, Sp6) and specific head points. A diagram illustrating acupuncture points for salivary stimulation, showing body points (CV24, LI4, St36, Sp6) on a human figure in panel A, and head points for ALTENS in panels B and C, referencing a study by Salmi F et al 2021. **Management – salivary stimulation** - Salivary neuro-electrostimulation → Intraoral electrostimulators 1. Removable (GenNarino, SaliPen) 2. Implant supported (Saliwell Crown, MICROSAL) #### Specific Intraoral Devices - **Removable Options**: - GenNarino - SaliPen - **Implant-Supported Options**: - Saliwell Crown - MICROSAL ```markdown Management – salivary stimulation - Salivary neuro-electrostimulation ```   Neuro-electrostimulation continues to be evaluated as a method for inducing salivary flow through neural pathways. A photo of a transparent dental appliance with an embedded electronic circuit board and a small circular component, likely part of a salivary neuro-electrostimulation device. The appliance is placed on a white surface with circular patterns. A photo of a white handheld device labeled 'SALIWELL' with 'ON' and 'OFF' buttons, used for salivary neuro-electrostimulation. The device has a green indicator light and is placed on a white surface with circular patterns. ```markdown Management – salivary stimulation - Salivary neuro-electrostimulation ``` ```html <table border="1" cellpadding="5" cellspacing="0" style="border-collapse: collapse; width: 100%; font-family: Arial, sans-serif; font-size: 14px;"> <tr> <td style="text-align: center; vertical-align: middle; background-color: #0000FF; color: #FFFF00; font-size: 28px; font-weight: bold;">Management – salivary stimulation</td> </tr> <tr> <td style="text-align: left; vertical-align: middle; background-color: #0000FF; color: #00FFFF; font-size: 20px;">Salivary neuro-electrostimulation</td> </tr> </table> ``` ```html <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAfQAAAF0CAYAAABtXKz9AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAE5lSURBVHgB7Z0HbFRV1f//z5wJYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYm   Salivary neuro-electrostimulation involves the application of electrical currents to stimulate the nerves responsible for salivary gland function. A photograph showing a dental model with a blue and white salivary neuro-electrostimulation device attached, illustrating its application in a clinical setting. An image of a handheld salivary neuro-electrostimulation device with a blue and white design, featuring a green indicator light and a curved tip for oral use. **Management – salivary stimulation** - Salivary neuro-electrostimulation    The application of neuro-electrostimulation is a specialized approach in the management of salivary dysfunction. A diagram illustrating salivary neuro-electrostimulation, showing the placement of electrodes and a wetness sensor near the long buccal nerve and lingual nerve, with labels indicating the components of the stimulation system. A close-up photo of a dental implant or device in the mouth, showing a metallic component attached to a tooth, with surrounding gum tissue visible. A photo showing a dental implant or device in the mouth, with a transparent or translucent component on a tooth, and adjacent teeth visible, including one with a dark filling. **Management – salivary stimulation** - **Salivary neuro-electrostimulation** <img src="https://i.imgur.com/1234567.png" alt="Two images showing a white, circular device with a central hole, placed in the mouth, surrounded by saliva. The device appears to be an implant or attachment for a dental prosthesis."> <img src="https://i.imgur.com/7654321.png" alt="A close-up image of the same white, circular device, showing its cylindrical shape and the metallic base. The device is held in the mouth, with saliva visible around it."> Figure 1. The MICROSAL device (MD) scheme: (A) main hole from the upper case (made for the sensors to be in contact with saliva), (B) microcontroller, (C) mini-antenna used for sending signals to the smartphone via Bluetooth technology, (D) one of the electrodes used for stimulation, (E) a wire which makes the connection to the batteries and activates the system when it is put in its case, (F) the upper part of the case, made from polypropylene, (G) the fastening elastic system (clips), (H) the downer part of the case, made from titanium alloy, (I) a metallic extension, also made from titanium alloy, (J) implant central cover screw, (K) the dental implant, Tehnomed system™, (L) the central part of the screw, (M, O) batteries, (N) the coating material (PanacoVitralit 2004 F), (P) the second electrode for stimulation, (R) printed circuit board (PCB), and (S, T) wetness and pH sensors. Funieru C et al 2023    #### The MICROSAL Device (MD) The MICROSAL system is an integrated dental implant stimulation device featuring: - **Sensors**: Wetness and pH sensors (S, T) in contact with saliva via a main hole (A). - **Electronics**: Microcontroller (B), printed circuit board (R), and batteries (M, O). - **Communication**: Mini-antenna (C) for Bluetooth connection to smartphones. - **Stimulation**: Dual electrodes (D, P) for active stimulation. - **Housing**: Titanium alloy lower case (H) and polypropylene upper case (F) secured by an elastic fastening system (G). - **Integration**: Attached to a dental implant (K) via a central cover screw (J) and metallic extension (I). Two close-up photos showing a white, circular dental implant device with a central hole, placed in the mouth surrounded by saliva. The images depict the device from different angles, highlighting its cylindrical shape and metallic base. A close-up photo of the same white, circular dental implant device, showing its cylindrical shape and metallic base. The device is held in the mouth with saliva visible around it, emphasizing its placement and design. A detailed diagram of the MICROSAL device (MD) scheme, illustrating its components such as the main hole, microcontroller, mini-antenna, electrodes, batteries, and sensors. The diagram labels each part, showing how they are integrated into the device for salivary stimulation and monitoring. # Management – salivary stimulation - In summary: - Limited evidence to determine the effects of electrostimulation devices on dry mouth symptoms or saliva production #### Summary of Evidence There is currently limited evidence to definitively determine the effects of electrostimulation devices on either subjective dry mouth symptoms or objective saliva production. # Management – other approaches - Acupuncture - Limited evidence in the management of hyposalivation and xerostomia #### Acupuncture - Evidence remains limited regarding the use of acupuncture for the management of hyposalivation and xerostomia. # Management – other approaches - **Photobiomodulation** → Radiation therapy (630-830nm, radiant exposure from 2-10 J/cm², 1-3 times a week) → Other #### Photobiomodulation - **Radiation Therapy Parameters**: - Wavelength: 630–830 nm - Radiant exposure: 2–10 J/cm² - Frequency: 1–3 times per week # Management - Experimental Approaches <img src="https://i.imgur.com/1QZJz9l.png" alt="Experimental Approaches diagram showing Gene therapy, Cell therapy, and Tissue engineering with associated components and methods." /> I T et al 2024  #### Experimental Therapeutic Approaches Research is currently investigating advanced biological interventions: - **Gene Therapy**: Modifying cellular function to restore secretion. - **Cell Therapy**: Utilizing stem cells or specialized cells to regenerate gland tissue. - **Tissue Engineering**: Creating functional salivary gland constructs. A diagram illustrating experimental approaches in management, including gene therapy, cell therapy, and tissue engineering. It shows components like viral vectors, plasmid vectors, targeted genes, and methods such as local administration and intravenous injection, with labels for cells, scaffold, and bioactive factors. ```markdown Management - Increased risk of dental caries - DIET - Oral hygiene - Fluoride - Re-mineralizing agents - Antimicrobial agents - Regular dental care ```  #### Managing Dental Caries Risk Patients with dry mouth require intensive preventive care due to increased caries risk: - **Dietary Modification**: Reducing fermentable carbohydrates. - **Oral Hygiene**: Enhanced plaque control. - **Fluoride**: High-concentration topical applications. - **Re-mineralizing Agents**: Products to support enamel integrity. - **Antimicrobial Agents**: To manage oral flora. - **Regular Dental Care**: Frequent professional monitoring. A photograph of an elderly man with glasses eating a yellow substance from a bowl, likely representing dietary management for dental health. The image is positioned next to a list of management strategies for increased risk of dental caries, including diet, oral hygiene, and regular dental care. # Management - Mucosal disease - Mucositis - Candidiasis - Sialadenitis - Halitosis <img src="https://i.imgur.com/5QJZvLp.jpg" alt="Oral cavity showing inflamed mucosa and teeth with visible decay and plaque buildup." />  #### Management of Oral Complications - **Mucosal Disease**: Treatment of mucositis and oral candidiasis (fungal infections). - **Sialadenitis**: Management of salivary gland inflammation. - **Halitosis**: Addressing breath odor resulting from reduced flow and microbial changes. A photo of an oral cavity showing inflamed mucosa, with visible signs of mucositis and candidiasis. The image displays red, irritated tissue and white patches on the tongue and inner cheeks, consistent with mucosal disease. Teeth exhibit decay and plaque buildup, supporting the diagnosis of oral health issues. ```markdown Prevention - Head and cancer patients - Sjogren syndrome ```  #### Preventive Focus Areas Prevention strategies are particularly critical for high-risk populations: - Head and neck cancer patients (undergoing radiation/chemotherapy) - Patients with Sjögren's Syndrome A medical imaging scan, likely a CT or MRI, showing a cross-sectional view of a head with multiple colored contour lines overlaid, indicating different regions or structures. The left side of the image displays a list of dose values in cGy, suggesting this is a radiation therapy planning image for head and cancer patients. # Dry mouth: In Summary - Common problem - Correct diagnosis - Complex problem - Growing problem - Management of dry mouth - Address the cause - Symptomatic management - Salivary Stimulation - Manage complications #### Summary of Dry Mouth Management - **Clinical Context**: Dry mouth is a common, complex, and growing problem requiring correct diagnosis. - **Management Strategy**: - Address the underlying cause whenever possible. - Provide symptomatic management for comfort. - Utilize salivary stimulation techniques. - Proactively manage secondary complications. [^1]: Original PDF page 1: [[L16 Dry Mouth.pdf#page=1|L16 Dry Mouth, p.1]] [^2]: Original PDF page 2: [[L16 Dry Mouth.pdf#page=2|L16 Dry Mouth, p.2]] [^3]: Original PDF page 3: [[L16 Dry Mouth.pdf#page=3|L16 Dry Mouth, p.3]] [^4]: Original PDF page 4: [[L16 Dry Mouth.pdf#page=4|L16 Dry Mouth, p.4]] [^5]: Original PDF page 5: [[L16 Dry Mouth.pdf#page=5|L16 Dry Mouth, p.5]] [^6]: Original PDF page 6: [[L16 Dry Mouth.pdf#page=6|L16 Dry Mouth, p.6]] [^7]: Original PDF page 7: [[L16 Dry Mouth.pdf#page=7|L16 Dry Mouth, p.7]] [^8]: Original PDF page 8: [[L16 Dry Mouth.pdf#page=8|L16 Dry Mouth, p.8]] [^9]: Original PDF page 9: [[L16 Dry Mouth.pdf#page=9|L16 Dry Mouth, p.9]] [^10]: Original PDF page 10: [[L16 Dry Mouth.pdf#page=10|L16 Dry Mouth, p.10]] [^11]: Original PDF page 11: [[L16 Dry Mouth.pdf#page=11|L16 Dry Mouth, p.11]] [^12]: Original PDF page 12: [[L16 Dry Mouth.pdf#page=12|L16 Dry Mouth, p.12]] [^13]: Original PDF page 13: [[L16 Dry Mouth.pdf#page=13|L16 Dry Mouth, p.13]] [^14]: 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