Table 1.

Diagnosis of TMD in subjects based on to the Research Diagnostic Criteria for Temporomandibular Disorders, n = 123.

Diagnosis	Number of subjects
Without TMD	66
TMD – Ia	39
TMD – Ib	18
TMD – IIa (right/left TMJ)	9 (6/7)
TMD – IIb (right/left TMJ)	0 (0/0)
TMD – IIc (right/left TMJ)	2 (1/1)
TMD – IIIa (right/left TMJ)	23 (20/19)

TMD, temporomandibular disorder; TMJ, temporomandibular joint; Ia, myofascial pain; Ib, myofascial pain with limited mouth opening; IIa, disc displacement with reduction; IIb, disc displacement without reduction; IIc, disc displacement without reduction and without limited mouth opening; IIIa, arthralgia.