The Diagnostic Value of Pressure Algometry for Temporomandibular Disorders

Table 3

Clinical index of temporomandibular dysfunction (Di).

Di	Symptoms
Mandibular movements
0	Normal range
1	Small reduction in amplitude
5	Large reduction in amplitude
Temporomandibular joint function
0	Smooth, noiseless abduction and adduction of mandible, trajectory asymmetry <2 mm
1	Noise in one joint or both joints during abduction and adduction of mandible, trajectory asymmetry >2 mm
5	Abduction of mandible impossible and/or luxation
Masticatory muscle pain
0	No tenderness
1	Tenderness of 1–3 sites
5	Tenderness of 4 and more sites
Temporomandibular joint pain
0	No tenderness
1	Unilateral or bilateral tenderness
5	Unilateral or bilateral tenderness of the dorsal surface of joint
Pain during movement of mandible
0	No pain
1	Pain during one out of all possible movement directions
5	Pain during more than one out of all possible movement directions