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The relationship between temporomandibular joint disk displacement and mandibular asymmetry in skeletal Class III patients

Cited 20 time in Web of Science Cited 22 time in Scopus
Authors

Choi, Hyung-Joo; Kim, Tae-Woo; Ahn, Sug-Joon; Lee, Shin-Jae; Donatelli, Richard E.

Issue Date
2011-07
Publisher
E H ANGLE EDUCATION RESEARCH FOUNDATION, INC
Citation
ANGLE ORTHODONTIST; Vol.81, No.4, pp.624-631
Keywords
TMJ disk displacementMandibular asymmetrySkeletal Class III
Abstract
Objective: To investigate the relationship between temporomandibular joint disk displacement (TMJ DD) and facial asymmetry in skeletal Class III patients. Materials and Methods: The subjects comprised 97 skeletal Class III adult patients seeking orthodontic treatment. In addition to the routine lateral and posteroanterior (PA) cephalograms, and regardless of the TMJ status, each subject consented to magnetic resonance imaging (MRI) to evaluate their TMJs. According to MRI readings, subjects were classified into four groups: group 1, bilateral normal disk position; group 2, bilateral DD with or without reduction; group 3, DD more advanced on the right side; and group 4, DD more advanced on the left side. PA and lateral cephalometric variables were analyzed to compare the four groups. Results: When the TMJ DD was more advanced on one side than on the other, the chin point usually deviated to the advanced side. When the TMJ DD status was equal or bilaterally normal, the amount of mandibular deviation was not significant. Conclusions: If a skeletal Class III patient has an asymmetric face, especially in the mandibular region, careful examination is necessary with regard to the status of the TMJ during orthodontic diagnosis and treatment planning. (Angle Orthod. 2011;81:624-631.)
ISSN
0003-3219
Language
English
URI
https://hdl.handle.net/10371/80515
DOI
https://doi.org/10.2319/091210-532.1
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College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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