Class III Treatment 

?
View mindmap
  • Treatment of Class III
    • Class III = lower incisor occluding in front of cingulum plateau of upper incisor
    • Cause?
      • - Maxillary   retrusion(34%)  - Mandibular protrusion       (40%)              - Both (26%)
    • Prognosis depends on..
      • - Skeletal     pattern             - Amount of overbite           - Growth
        • Upper incisor Proclinication
        • Edge-to-Edge bite
        • Minimal OB = relapse
    • Treatment Approaches
      • Normal OB
        • Mild                  Moderate         Severe
          • Avoid upper XLA if no lower crowding
          • Fixed appliance, Loss of overbite, Poor prognosis (laterals can move back)
          • Crossbite, No edge-to-edge, Surgery + Ortho
      • Reduced OB
        • Mild                  Moderate
          • Accept incisors, Align teeth ONLY, Procline to reduce OB, XLA lower PMs, Bring lower anteriors back
          • Poor prognosis, Accept incisors, Align ONLY / Surgery + Ortho
    • Interceptive Treatment
      • 1. Skeletal pattern (growth modification)
        • - Mandible         back                  - Maxilla               forward           - Both
          • - Chin-cup      - Face mask 20 hrs/day (4-6 months)        - Twin block    - Frankel 3
          • PROBLEMS  - Small activation         - Maxillary retrusion          - Continued growth
      • 2. Simple interception (move incisor over the bite)
        • PROBLEMS     - Class II skeletal            - Enough OB  - Primary canine Xbite    - Space between canines           - Lateral incisor resorption
    • No XLA in upper if no XLA in lower arch
    • Removable Appliances?
      • Class I / Mild Class III Skeletal + normal OB
      • Can achieve edge-to-edge

Comments

No comments have yet been made

Similar resources:

See all resources »