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Occlusion for the Class II jaw relations patient
1University of Southern California, School of Dentistry, Los Angeles.
The Journal of Prosthetic Dentistry
|October 1, 1990
Summary
Patients with small mandibles often exhibit a Class II occlusion, differing significantly from Class I standards. This unique bite pattern requires specific management, focusing on posterior determinants for optimal function and guidance.
Area of Science:
- Dentistry
- Orthodontics
- Occlusion Analysis
Background:
- Patients with a small mandible often present with occlusal patterns deviating from standard Class I criteria.
- Class II occlusion exhibits distinct characteristics compared to other occlusal schemes.
Purpose of the Study:
- To describe the unique occlusal patterns observed in patients with a small mandible, specifically those presenting as Class II.
- To highlight the functional and guidance differences in Class II occlusion compared to ideal occlusion.
Main Methods:
- Analysis of occlusal patterns in patients with small mandibles.
- Identification of key features distinguishing Class II occlusion.
Main Results:
- Class II occlusion involves anterior teeth lacking normal protective overlap, with posterior teeth bearing the primary occlusal forces.
- Protrusive movements are dominant, requiring posterior teeth to function from centric relation to anterior separation.
- Balancing contacts on posterior teeth are common, characterizing this as a type of bilateral balanced occlusion.
- Increased interocclusal clearance is necessary and must be evaluated for speech and function.
Conclusions:
- Class II occlusion, particularly in patients with a small mandible, is a complex pattern requiring precise management.
- Posterior determinants of occlusion are critical factors controlling this specific occlusal arrangement.