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Relationship between occlusal force and mandibular condyle morphology. Evaluated by limited cone-beam computed
Aya Kurusu1, Mariko Horiuchi, Kunimichi Soma
1Orthodontic Science, Department of Orofacial Development and Function, Division of Oral Health Science, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan. aya1122rsw@yahoo.co.jp
The Angle Orthodontist
|October 27, 2009
Summary
Occlusal force impacts mandibular condyle shape and size. Lower bite forces are linked to smaller condyles, particularly on the lateral and posterior aspects, influencing facial morphology.
Area of Science:
- Dentistry
- Orthodontics
- Biomechanics
Background:
- Understanding the interplay between functional forces and skeletal morphology is crucial in orthodontics.
- Mandibular condyle morphology is a key factor in temporomandibular joint function and overall facial structure.
Purpose of the Study:
- To investigate the correlation between occlusal force and mandibular condyle morphology in patients with malocclusion.
- To determine if occlusal forces influence specific dimensions of the mandibular condyle.
Main Methods:
- Utilized limited cone-beam CT imaging to assess mandibular condyle morphology in 40 female malocclusion patients.
- Measured maximum occlusal force using pressure-sensitive films and analyzed maxillofacial morphology via lateral cephalograms.
Main Results:
- Occlusal force showed significant correlations with condylar radii (lateral and posterior) and mandibular plane angle.
- Condylar length was associated with occlusal plane angle, mandibular plane angle, ramus inclination, and posterior facial height.
- Patients with lower occlusal forces exhibited smaller mandibular condyles, especially laterally and posteriorly.
Conclusions:
- Occlusal force is a significant determinant of mandibular condyle morphology.
- Findings suggest that functional forces play a role in shaping not only maxillofacial structures but also the condyles themselves.
