Table 5.
Relationship between OHRQoL and malocclusions.
| Malocclusions | Occurrence | Impact on OHRQoL | Total | χ 2 | p value | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Yes | ||||||||
| n | % | n | % | n | % | ||||
| Anteriomaxillary overjet | No | 339 | 90.2 | 37 | 9.8 | 376 | 97.9 | 61.549 | <0.001∗ |
| Yes | 0 | 0.0 | 8 | 100 | 8 | 2.1 | — | — | |
|
| |||||||||
| Anterioposterior molar relation | No | 332 | 89.2 | 39 | 10.8 | 361 | 94.0 | 4.882 | 0.027∗ |
| Yes | 17 | 73.9 | 6 | 26.1 | 23 | 6.0 | — | — | |
|
| |||||||||
| Vertical anterior open bite | No | 321 | 88.9 | 40 | 11.1 | 361 | 94.0 | 2.374 | 0.123 |
| Yes | 18 | 78.3 | 5 | 21.7 | 23 | 6.0 | — | — | |
|
| |||||||||
| Anteriomandibular overjet | No | 337 | 88.7 | 43 | 11.3 | 380 | 99.0 | 5.726 | 0.010∗ |
| Yes | 2 | 50 | 2 | 50 | 4 | 1.0 | — | — | |
|
| |||||||||
| Missing teeth in maxilla | No | 337 | 88.2 | 45 | 11.8 | 382 | 99.5 | 0.267 | 0.605 |
| Yes | 2 | 100 | 0 | 0.0 | 2 | 0.5 | — | — | |
|
| |||||||||
| Spacing | No | 310 | 90.6 | 32 | 9.4 | 342 | 89.1 | 16.863 | <0.001∗ |
| Yes | 29 | 69.0 | 13 | 31.0 | 42 | 10.9 | — | — | |
|
| |||||||||
| Crowding | No | 319 | 89.9 | 36 | 10.1 | 355 | 92.4 | 11.313 | 0.001∗ |
| Yes | 20 | 69.0 | 9 | 31.0 | 29 | 7.6 | — | — | |
|
| |||||||||
| Diastema | No | 313 | 90.5 | 33 | 9.5 | 346 | 90.1 | 16.079 | <0.001∗ |
| Yes | 26 | 68.4 | 12 | 31.6 | 38 | 9.9 | — | — | |
|
| |||||||||
| Overall malocclusions | No | 264 | 95.3 | 13 | 4.7 | 277 | 72.1 | 47.429 | <0.001∗ |
| Yes | 75 | 70.1 | 32 | 29.9 | 107 | 27.9 | — | — | |
n: number; %: percentage; OHRQoL: oral health-related quality of life; ∗p < 0.05 is significant.