Table 2.
Prevalence of TDIs according to characteristics of obesity, lip competency, incisal overjet, and molar relationship
| Variables | N | No. and % of children with TDIs | p* |
|---|---|---|---|
| BMI for age of children | |||
| <95th percentile | 2,897 | 332 (11.5) | >0.05 |
| >95th percentile (obese) | 103 | 11 (10.7) | |
| Lip competency | |||
| Competent lips | 2,538 | 170 (6.7) | <0.001 |
| Incompetent lips | 462 | 173 (37.4) | |
| Incisal overjet | |||
| ≤5 mm | 2,636 | 189 (7.2) | <0.001 |
| ≥5 mm | 364 | 154 (42.3) | |
| Molar relationship | |||
| Class I | 2,557 | 264 (10.3) | <0.001 |
| Class II div 1 | 264 | 69 (26.1) | |
| Class II div 2 | 142 | 8 (5.6) | |
| Class III | 37 | 2 (5.4) | |
*
Chi square test. N: number of children presenting with the variable