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[Effect of right chewing-side preference on morphological temporomandibular joint changes]
Hua Jiang1, Zhao-Wu Wang, Hong-Chen Liu
1Department of Stomatology, Chinese PLA General Hospital. Beijing 100853, China. JH1225@163.com
Shanghai Kou Qiang Yi Xue = Shanghai Journal of Stomatology
|March 25, 2011
Summary
Right chewing preference significantly alters temporomandibular joint (TMJ) morphology, particularly affecting condylar neck thickness and joint spaces. These findings highlight the impact of habitual chewing on TMJ structure.
Area of Science:
- Dentistry
- Orthodontics
- Radiology
Background:
- Chewing side preference is common.
- Its effect on temporomandibular joint (TMJ) morphology is not fully understood.
- Cone-beam computed tomography (CBCT) offers detailed TMJ imaging.
Purpose of the Study:
- To investigate how a preferred right chewing side influences temporomandibular joint (TMJ) bony structures.
- To utilize CBCT for precise morphological analysis of the TMJ.
Main Methods:
- CBCT scans of 52 patients with right chewing preference were analyzed.
- TMJ bony structures were evaluated in multiple planes (axial, coronal, sagittal, oblique).
- Statistical analysis using paired t-tests compared habitual and non-habitual chewing sides.
Main Results:
- Significant differences were observed in joint spaces at specific oblique angles (60°, 90°).
- Condylar neck thickness and joint spaces showed significant variations in sagittal and vertical oblique views.
- No significant differences were found in other measured parameters.
Conclusions:
- Right chewing side preference demonstrably affects temporomandibular joint (TMJ) morphology.
- Specific TMJ regions, including condylar neck and joint spaces, are altered by habitual chewing.
- Further research may elucidate the long-term clinical implications of these morphological changes.
