Postural Analysis in Temporomandibular Joint Dysfunction (TMJD) Patients: Correlation With Head and Neck Positioning

Area of Science:

• Orthodontics and Dental Biomechanics
• Physical Therapy and Rehabilitation
• Medical Imaging and Biomechanics

Background:

• The association between head-neck posture and temporomandibular joint dysfunction (TMJD) is debated due to inconsistent research findings.
• This study investigated specific postural angles in TMJD patients versus healthy individuals.

Purpose of the Study:

• To compare craniohorizontal angle (CHA) and craniovertebral Angle (CVA) between TMJD patients and controls.
• To identify postural factors associated with TMJD.

Main Methods:

• A case-control study involving 65 TMJD patients and 65 controls (ages 18-50).
• Analysis of head positioning angles (CHA and CVA) from photographs using Adobe Photoshop.
• Statistical analysis included t-tests, chi-square tests, and multiple linear regression.

Main Results:

• A significantly lower mean CVA (indicating forward head posture) was observed in TMJD patients (41.1°) compared to controls (56.83°).
• No significant difference in CHA was found between groups.
• Lower CVA was significantly associated with older age, bruxism, and clenching, explaining 77.8% of the variance.

Conclusions:

• Forward head posture (lower CVA) is associated with TMJD.
• Integrating postural assessment and management of parafunctional habits (bruxism, clenching) is crucial for TMJD treatment.