RPD Core Objectives

Curated short-form

One-line objectives per lecture, capped at 6, filtered for denture creation and clinical practice. Each ends with (yield, short reason). For the full 121-item priority list see LOs.

L1 Introduction to RPD

• State Ante’s Law to decide between RPD and fixed bridge (high-yield, treatment-planning gate)
• Recognize distal extension cases contraindicate fixed bridges (high-yield, defaults to RPD)
• Compare chrome vs acrylic for indications and longevity (high-yield, prescription decision)
• Distinguish interim vs definitive RPD indications (high-yield, sets timeline)
• Identify Combination Syndrome and its two causative scenarios (medium-yield, edentulous-pairing risk)
• Note bone-remodelling timeline after extraction (low-yield, background context)

L2 Components and Classifications

• Identify the seven RPD components and each function (high-yield, design vocabulary)
• Classify any arch using the four Kennedy classes (high-yield, daily clinical use)
• Apply all eight Applegate rules including no-mods-in-Class-IV (high-yield, classification accuracy)
• Locate direct vs indirect retainers relative to the fulcrum line (high-yield, design rule)
• Predict prognosis from tooth-, tissue-, or combination-supported case (medium-yield, treatment planning)
• Reject any unilateral-extension framework design (high-yield, aspiration risk)

L3 Rests and Rest Seats

• Differentiate rest (component) from rest seat (preparation) (high-yield, vocabulary fluency)
• Cut occlusal rest seats to spec: rounded triangular, B/L = ½ inter-cusp, <90° (high-yield, chairside skill)
• Cut cingulum rest seats with inverted-smile MD convexity and BL V-concavity (high-yield, chairside skill)
• Reject box-shaped rest seats — concentrate load, no rotation, plaque trap (high-yield, prevents iatrogenic harm)
• Place rests mesial to the terminal abutment in Class I/II (high-yield, controls tipping)
• Justify why omitting prep gives a high bite or thin clasp (medium-yield, defends prescription)

L4 Clasp Assembly

• List the four clasp-assembly components: rest, retentive arm, reciprocal arm, minor connector (high-yield, design vocabulary)
• Recite the six retentive-unit requirements (Support, Stabilization, Retention, Reciprocity, Engagement, Passivity) (high-yield, viva staple)
• Apply the >180° encirclement rule on every clasp (high-yield, retention rule)
• Match clasp type to indication: Akers, ring, embrasure, RPI for Kennedy I/II (high-yield, daily design choice)
• Place the terminal third of the retentive arm in the gingival/middle third (high-yield, design rule)
• List the five flexibility factors: length, taper, cross-section, diameter, material (medium-yield, troubleshoots fit)

L5 Major and Minor Connectors

• Apply gingival clearance: mandible 3–4 mm, maxilla 5–6 mm (high-yield, design measurement)
• Select the maxillary major connector for any case (palatal strap, A-P strap, plate, U-shape) (high-yield, daily design choice)
• Select the mandibular major connector for any case (lingual bar, plate, sublingual, double bar) (high-yield, daily design choice)
• Apply the lingual bar space requirement: 8 mm = 5 mm bar + 3 mm clearance (high-yield, go/no-go check)
• Reject the U-shape unless forced by a soft-palate-extending torus (medium-yield, anti-pattern)
• Differentiate internal (90° butt) vs external (beveled) finish lines (medium-yield, lab communication)

L6 Dental Surveyor

• Use the side of the carbon marker, never the tip, to mark HOC (high-yield, prevents false HOC)
• Apply alloy-specific undercut depths: CoCr 0.25, gold 0.50, SS wire 0.75 mm (high-yield, prevents plastic deformation)
• Execute the Roach three-point method on mounted casts (high-yield, primary POI technique)
• Execute the Applegate technique to place HOC between gingival and middle thirds (high-yield, alternate POI method)
• Name the major surveyor components and each function (medium-yield, equipment fluency)
• Recognize when the Bisector technique fails on multiply-tilted teeth (medium-yield, knows technique limits)

L7 Survey and Design

• Execute the seven-step surveying sequence on a mounted cast (high-yield, full design workflow)
• Place rests adjacent in Class III but mesial in Class I/II (high-yield, rotation control)
• Apply the 3 mm soft-tissue threshold for suprabulge vs infrabulge clasp (high-yield, design decision)
• Use a 0.25 mm gauge to mark the CoCr retentive point (high-yield, chairside-lab handoff)
• Apply the 3 mm gingival-margin clearance rule for all minor connectors (high-yield, universal design rule)
• Recognize when modification fails and a survey crown is required (medium-yield, escalation gate)

L8 Mouth preparation for RPD

• Verify control-phase success by reduced BoP and probing depth (high-yield, gates everything else)
• Apply the ferrule rule on every endo abutment (high-yield, predicts crown survival)
• Apply the rest-in-amalgam rule: ≥1 mm amalgam under and around the seat (high-yield, prep go/no-go)
• Decide endo-abutment readiness using the OCHWA external-RCT rule (high-yield, OCHWA-specific protocol)
• Fabricate a Duralay transfer guide cemented with zinc phosphate (high-yield, lab-clinic handoff)
• Distinguish survey crown vs conservative recontouring indications (medium-yield, design escalation)

L9 Clinical Sequence

• Sequence the full clinical-laboratory workflow from history to review (high-yield, big-picture roadmap)
• Record OVD using freeway space and verify with closest speaking space (high-yield, daily MMR step)
• Apply the finger-pressure rule: pressure on rests only, never the saddle (high-yield, prevents tissue distortion)
• Apply the terminal-third never-adjust rule on the retentive arm (high-yield, prevents broken clasp)
• Identify the altered-cast indication: mandibular Kennedy I/II only (high-yield, specific scenario)
• Manage insertion defects: voids → lab, nodules → chairside, overextensions → trim (medium-yield, insertion troubleshoot)

L10 RPDs Summary

• Self-assess Kennedy and Applegate fluency on five mixed cases (high-yield, exam readiness)
• Recite the six retentive-unit requirements without prompts (high-yield, viva staple)
• Recite the five core design principles: support, rigidity, bracing, stability, stress distribution (high-yield, design framework)
• Apply class-specific design rules for Class I/II vs III vs IV (high-yield, design decision)
• Recite the three hazards of poor RPD design: decay, tissue change, TMJ dysfunction (medium-yield, prescription justification)
• Walk through the design workflow: diagnose → classify → survey → prep → components (medium-yield, integrative recall)

L11 RPD Lecture Recap

• Walk the systematic design sequence: classify → survey → design → mouth prep → impressions → framework → delivery (high-yield, integrative recall)
• Distinguish support, retention, indirect retention, bracing, reciprocation, and stability as separate functions (high-yield, viva vocabulary)
• Recite the three hazards of poor design: tooth decay, pathologic tissue change, TMJ disorders (high-yield, prescription justification)
• Apply Kennedy Class I design priorities: max base extension, rigid major connector, indirect retention (high-yield, distal-extension rule)
• Apply Kennedy Class II priorities: cross-arch stabilization, indirect retention, balance abutment stress (high-yield, asymmetric loading)
• Apply Kennedy Class IV priorities: aesthetics, lip support, canine guidance, no modifications allowed (medium-yield, anterior-only case)

L12 Marwa RPD Final CSSL Presentation

• Execute the 11-step survey process from preliminary assessment through redrawing erased lines (high-yield, CSSL exam workflow)
• Set initial POI perpendicular to the occlusal plane using three reference points (high-yield, surveying technique)
• Match undercut gauges to alloy: 0.25 mm CoCr, 0.50 mm gold, 0.75 mm wrought wire (high-yield, equipment selection)
• Cut occlusal rest seats to 1–1.5 mm marginal-ridge reduction tapering to 0.5 mm centrally (high-yield, chairside dimension)
• Test rest seat positivity by sliding an explorer tip — must be <90° (high-yield, chairside check)
• Build composite cingulum rest seats with flat cervical emergence and incisal bulk (medium-yield, fallback technique)