Table 9. Association between overjet and related factors in females.
| Parameter | Normal occlusion (n = 394) |
Overjet (n = 56) |
P valuea |
| BMI (kg/m2) | 20.5 ± 2.4 | 19.9 ± 2.0 | 0.065 |
| BMI category | 0.118 | ||
| Underweight (BMI <18.5 kg/m2) | 81 (20.6) | 18 (32.1) | |
| Normal weight (BMI 18.5–24.9 kg/m2) | 295 (74.9) | 38 (67.9) | |
| Overweight (BMI 25–29.9 kg/m2) | 17 (4.3) | 0 (0.0) | |
| Obesity (BMI ≥30 kg/m2) | 1 (0.3) | 0 (0.0) | |
| Number of teeth present | 28.4 ± 1.1 | 28.2 ± 1.2 | 0.297 |
| Maximum occlusal tooth wear index score | 0.618 | ||
| 0 | 114 (28.9) | 21 (37.5) | |
| 1 | 208 (52.8) | 26 (46.4) | |
| 2 | 66 (16.8) | 8 (14.3) | |
| 3 | 6 (1.5) | 1 (1.8) | |
| 4 | 0 (0.0) | 0 (0.0) | |
| Buccal mucosa ridging | 0.298 | ||
| No | 134 (34.0) | 14 (25.0) | |
| Partial | 190 (48.2) | 33 (58.9) | |
| Widespread | 70 (17.8) | 9 (16.1) | |
| Dental impression on the tongue | 118 (29.9) | 16 (28.6) | 0.833 |
| Palatal torus | 4 (1.0) | 2 (3.6) | 0.119 |
| Mandibular torus | 38 (9.6) | 9 (16.1) | 0.141 |
| Awareness of bruxism | |||
| Jaw fatigue on waking in the morning | 13 (3.3) | 1 (1.8) | 0.542 |
| Sore teeth or gums on waking in the morning | 10 (2.5) | 3 (5.4) | 0.239 |
| Headache on waking in the morning | 33 (8.4) | 4 (7.1) | 0.753 |
| Grinding during the day | 11 (2.8) | 3 (5.4) | 0.301 |
| Clenching during the day | 50 (12.7) | 6 (10.7) | 0.675 |
| Sleep bruxism | 37 (9.4) | 4 (7.1) | 0.584 |
| Oral habits | |||
| Biting fingernail/pens/pencils | 25 (6.3) | 3 (5.4) | 0.775 |
| Biting mucosa of cheeks/lips | 82 (20.8) | 10 (17.9) | 0.608 |
| Gum chewing | 28 (7.1) | 5 (8.9) | 0.625 |
BMI, body mass index.
All values are reported as number (%) except for BMI, which is reported as mean ± standard deviation.
at test or χ2 test.