Table 4. Distribution of Cases Based on the Degree of TMJ Involvement According to MRI and Fonseca’s Questionnaire in the RA Group .

Involvement	MRI (Right TMJ)	MRI (Left TMJ)	Fonseca’s questionnaire
Normal	1 (3.3%)	4 (13.3%)	1 (3.3%)
Mild	11 (36.7%)	12 (40.0%)	3 (10.0%)
Moderate	13 (43.3%)	9 (30.0%)	18 (60.0%)
Severe	5 (16.7%)	5 (16.7%)	8 (26.7%)

MRI: Magnetic resonance imaging; TMJ: Temporomandibular Joint.