A syndrome of pain in and dysfunction of the TMJ and muscles of mastication
Epidemiology
Etiology
Movement of TMJ
All 4 muscles of mastication are innervated by V3:
- Temporalis – elevation & retraction
- Masseter - elevation
- Medial pterygoid - elevation
- Lateral pterygoid - protrusion
TMJ disorders etiology
The etiology of TMJ disorders (TMDs) is likely multifactorial and involves:
- Behavioral factors: e.g., poor head and/or cervical spine posture, possibly bruxism
- Hypersensitivity of the mandibular nerve (CN V3).
- Psychological factors: e.g., depression, anxiety, stress
- Trauma to the TMJ: e.g., cervical spine or jaw injuries
Pathophysiology
Clinical features
Diagnostics
Treatment
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