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Table 2 AAOP diagnostic classification of TMDs

From: Orthognathic surgery and temporomandibular joint symptoms

Diagnostic Category Diagnoses
Cranial bones (including the mandible) Congenital and developmental disorders: aplasia, hypoplasia, hyperplasia, dysplasia (eg, first and second branchial arch anomalies, hemifacial microsomia, Pierre Robin syndrome, Treacher Collins syndrome, condylar hyperplasia, prognathism, fibrous dysplasia) Acquired disorders (neoplasia, fracture)
TMJ disorders Deviation in form Disc displacement (with reduction; without reduction) Dislocation Inflammatory conditions (synovitis, capsulitis) Arthritides (osteoarthritis, osteoarthrosis, polyarthritides) Ankylosis (fibrous, bony) Neoplasia
Masticatory muscle disorders Myofascial pain Myositis spasm Protective splinting Contracture
  1. Adapted from Leeuw Rd, Klasser GD, American Academy of Orofacial P. Orofacial pain : guidelines for assessment, diagnosis, and management. 5th edition. Chicago: Quintessence Publishing; 2013.