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Related Experiment Videos

Condylar position and Class II deep-bite, no-overjet malocclusions.

A A Gianelly1, J C Petras, J Boffa

  • 1Boston University, Goldman School of Graduate Dentistry, Department of Orthodontics, MA 02118-2392.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|November 1, 1989
PubMed
Summary

This study found no significant difference in condylar positions between individuals with severe Class II malocclusions and control subjects. Condylar position was also not correlated with bite depth in these participants.

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Area of Science:

  • Orthodontics and Dental Anatomy
  • Temporomandibular Joint (TMJ) Research

Background:

  • Class II malocclusion is a common dental condition.
  • Severe forms often involve significant overbite and specific interincisal angles.
  • Understanding condylar position in malocclusion is crucial for treatment planning.

Purpose of the Study:

  • To compare temporomandibular joint (TMJ) condylar positions in subjects with severe Class II malocclusion versus controls.
  • To investigate the relationship between condylar position and the degree of bite depth in Class II malocclusion.

Main Methods:

  • Corrected tomography was used to assess condylar positions.
  • The study included 19 subjects with specific Class II malocclusion criteria and 21 control subjects.
  • Measurements included condylar position, bite depth, overjet, and interincisal angle.

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Main Results:

  • Average condylar position was concentric in both the Class II malocclusion group and the control group.
  • No statistically significant differences in condylar position were found between the two groups.
  • No significant correlation was observed between condylar position and bite depth.

Conclusions:

  • Severe Class II malocclusion, as defined in this study, does not appear to be associated with altered condylar positions.
  • Condylar position may be a stable factor irrespective of significant bite depth in this malocclusion type.
  • Further research could explore other TMJ parameters in relation to Class II malocclusion.