| Pain-related TMD (n = 37) | Intra-articular TMD (n = 160) | Combined TMD (n = 42) | |||
---|---|---|---|---|---|---|
r | p value | r | p value | r | p value | |
Biological factor | ||||||
Age | 0.013 | 0.711 | 0.020 | 0.585 | 0.062 | 0.091 |
Gender | 0.008 | 0.832 | 0.097 | 0.008 | 0.089 | 0.014 |
Sleep bruxism | 0.078 | 0.033 | 0.075 | 0.039 | 0.126 | 0.001 |
Awake bruxism | 0.039 | 0.280 | 0.075 | 0.040 | 0.031 | 0.390 |
Empty chewing | 0.031 | 0.394 | 0.112 | 0.002 | 0.162 | < 0.001 |
Unilateral chewing | 0.074 | 0.042 | 0.118 | 0.001 | 0.164 | < 0.001 |
Chewing gum | 0.033 | 0.371 | 0.037 | 0.310 | 0.064 | 0.081 |
Static occlusion | ||||||
Angle’s malocclusion | 0.030 | 0.567 | 0.066 | 0.078 | 0.051 | 0.764 |
Anterior teeth overbite | 0.099 | 0.006 | 0.096 | 0.008 | 0.071 | 0.050 |
Anterior teeth overjet | 0.060 | 0.097 | 0.078 | 0.031 | 0.027 | 0.451 |
Posterior teeth crossbite | 0.020 | 0.580 | -0.066 | 0.070 | 0.015 | 0.674 |
Posterior scissor bite | 0.013 | 0.720 | 0.003 | 0.926 | 0.092 | 0.051 |
Psychological factor | ||||||
Depression | 0.116 | 0.001 | 0.119 | 0.001 | 0.148 | < 0.001 |
Anxiety | 0.134 | < 0.001 | 0.230 | < 0.001 | 0.148 | < 0.001 |
Sleep disturbance | 0.026 | 0.477 | 0.119 | 0.001 | 0.114 | 0.002 |