Table 2 Basic clinical characteristics. Data are showed as means ± standard deviation (SD) for continuous variables, or frequencies (proportions) for categorical variables. Comparisons were performed using t test or non-parametric test and Chi square test as appropriate. Temporomandibular disorders TMD. Oral submucosal fibrosis OSF
Variables | Control (n = 408) | Betel nut chewing related severely worn dentition (n = 408) | P value |
|---|---|---|---|
Age (years) | 43.62 ± 9.54 | 43.73 ± 8.93 | 0.871 |
Male [n (%)] | 380 (93.14) | 380 (93.14) | 1.000 |
Betel chewing [n (%)] | 0 | < 100 pieces*years: 177 (43.38) ≥ 100 pieces*years: 231 (56.62) |  |
OSF | 0 | 89 (21.81) | Â |
Missing tooth [n (%)] | 69 (16.91) | 75 (18.38) | 0.646 |
Visible third molar [n (%)] | 240 (58.82) | 232 (56.86) | 0.620 |
Orthodontic history [n (%)] | 2 (0.49) | 3 (0.74) | 1.000 |
Overall TMD [n (%)] | 148 (36.27) | 203 (49.75) | P < 0.001, Phi value = 0.136 |
Intra-articular TMD [n (%)] | 147 (36.03) | 197 (48.28) | P = 0.001, Phi value = 0.124 |
Pain-related TMD [n (%)] | 6 (1.47) | 12 (2.94) | P = 0.233, Phi value = 0.050 |