Quartz 4

W4.1 Space Analysis

3 min read

Interpretation

mandibular space

  • the mandibular incisors are crowded with the current dentition
  • the discrepency in the space analysis of 2.1 mm indicats there is adequate space and that this crowding will correct naturally
  • the molars will remain in class I occlusion

Variables to consider:

  • Space discrepancy
    • 2.1
  • Molar shift
    • 2.1
  • Lip position
    • acceptable
  • lower incisor position
    • acceptable ,crowded

Maxillary space

Variables to consider:

  • Space discrepancy
    • -1.8
  • Molar shift
    • 0
  • Lip position
    • acceptable
  • upper incisor postion
    • acceptable

There are small max and mand space discrpencies (-1.8, 2.1 mm respectively). When this is combined iwth the molar shift (0 mm), the space appears to be sufficient , especially given the acceptable lip position and retrusive lower incisors.

Example interpreation

There are small max mand space discrepenacies (-1.6 and 0.7 mm). When thisis combined with the molar shift (3.4mm), there appears to be a considerable problem. But when one considers the acceptable lip positoin and retrusive lower incisors, the space appears to be more borderline

retroclined vs proclined incisors

You need space to correct proclined incisors, so if you have a small amount of space but the are retroclined then its ok because they will procline and create space people get premolars removd specifically because of excessive proclination!!

Model Analysis

1. symmetry, space and tooth size

Symmetry

  • Mandibular:
    • symmetrical
    • 42 is partially erupted and linguoverted
    • 32 is unerupted
  • Maxillary:
    • Assymetrical
      • break in arch form in quadrant 2
      • 21 is fused with a supernumerary mesidens

2. alignment, crowding and spacing

Mandibular:

  • Aligment of teeth looks acceptable , partially erupted 42 should be monitored for linguoversion Maxillary
  • Alignment in Q1 looks acceptable with respect to arch form, contact points, rotations and space although 12 is unerupted .
  • Alignment in q2 is significantly affected due to crowding and overlapping contact points
    • 21 is labially displaced and ectopic due to is fusion with the mesidoense
    • The contact point of 22 completely overlaps the 21-mesiodense fusion , furthermore the 22 is palatally displaced

3. Tooth size analysis

  • Proportion
    • Mandibular
      • acceptable, tooth sizes appear to align with conventional ratios and arch width
    • Maxillary
      • the fusion of 21 has caused a very disproportionate tooth, otherwise maxillary teeth seem proprotionate

4. Arch form

  • Mandibular
    • Normal
      • Square shaped
  • Maxillary
    • Normal
      • ovoid shaped

5. Anterior-Posterior Relationship

  • Left molar relationship : 1 unit class II
  • Right molar relationship: 1 unit class II
  • Maxillary incisors retroclined
  • resulting in class II div II
  • 6mm overjet

6. Vertical relationship

  • closed bite: 100% overbite

7. Transverse relationship

normal

Graph View