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Occlusion for the Class II jaw relations patient.

W O Jensen1

  • 1University of Southern California, School of Dentistry, Los Angeles.

The Journal of Prosthetic Dentistry
|October 1, 1990
PubMed
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.

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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.

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