Association between the Temporomandibular Joint Morphology and Chewing Pattern
Issued Date
2023-07-01
Resource Type
eISSN
20754418
Scopus ID
2-s2.0-85164722728
Journal Title
Diagnostics
Volume
13
Issue
13
Rights Holder(s)
SCOPUS
Bibliographic Citation
Diagnostics Vol.13 No.13 (2023)
Suggested Citation
Sritara S., Matsumoto Y., Lou Y., Qi J., Aida J., Ono T. Association between the Temporomandibular Joint Morphology and Chewing Pattern. Diagnostics Vol.13 No.13 (2023). doi:10.3390/diagnostics13132177 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/88067
Title
Association between the Temporomandibular Joint Morphology and Chewing Pattern
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
This study aimed to investigate whether the morphology of the temporomandibular joint (TMJ) is associated with chewing patterns while considering skeletal morphology, sex, age, and symptoms of temporomandibular disorder (TMD). A cross-sectional observational study of 102 TMJs of 80 patients (age 16–40 years) was performed using pretreatment records of cone-beam computed tomography imaging of the TMJ, mandibular kinesiographic records of gum chewing, lateral and posteroanterior cephalometric radiographs, patient history, and pretreatment questionnaires. To select appropriate TMJ measurements, linear regression analyses were performed using TMJ measurements as dependent variables and chewing patterns as the independent variable with adjustment for other covariates, including Nasion-B plane (SNB) angle, Frankfort-mandibular plane angle (FMA), amount of lateral mandibular shift, sex, age, and symptoms of TMD. In multiple linear regression models adjusted for other covariates, the length of the horizontal short axis of the condyle and radius of the condyle at 135° from the medial pole were significantly (p < 0.05) associated with the chewing patterns in the frontal plane on the working side. “Non-bilateral grinding” displayed a more rounded shape of the mandibular condyle. Conversely, “bilateral grinding” exhibited a flatter shape in the anteroposterior aspect. These findings suggest that the mandibular condyle morphology might be related to skeletal and masticatory function, including chewing patterns.