TABLE 1.

Expanded taxonomy of TMD (Peck et al., 2014).

I. TMD	1.A: Joint pain (arthralgia and arthritis)
	1.B: Joint disorders (disc disorders, hypomobility disorders other than disc disorders, and hypermobility disorders) Disc disorders: disc displacement with reduction and disc displacement with reduction with intermittent locking Disc displacement without reduction with limited opening Disc displacement without reduction without limited opening hypomobility disorders other than disc disorders
	1.C: Joint diseases (degenerative joint disease, systemic arthritides, condylysis/idiopathic condylar resorption, etc.)
	1.D: Fractures
	1.E: Congenital/developmental disorders (aplasia, hypoplasia, and hyperplasia)
II. Masticatory muscle disorders	2.A: Muscle pain (myalgia, tendonitis, myositis, and spasm)
	2.B: Contracture
	2.C: Hypertrophy
	2.D: Neoplasm
	2.E: Movement disorders (orofacial dyskinesia and oromandibular dystonia)
	2.F: Masticatory muscle pain attributed to systemic/central pain disorders (fibromyalgia/widespread pain)
III. Headache	Headache attributed to TMD
IV. Associated structures	Coronoid hyperplasia