Table 1.
Characteristics of adult patients with anterior open bite in the present study
| Category | n | % |
|---|---|---|
| Sex | ||
| Male | 15 | 23 |
| Female | 54 | 77 |
| Age (yr) | ||
| 18–25 | 6 | 9 |
| 25–35 | 44 | 64 |
| ≥ 35 | 19 | 27 |
| Initial overbite (mm) | ||
| < −5 | 3 | 4 |
| −5 to −4 | 7 | 10 |
| −4 to −3 | 9 | 13 |
| −3 to −2 | 10 | 14 |
| −2 to −1 | 30 | 44 |
| −1 to −0.5 | 10 | 14 |
| Vertical pattern (M:F) | ||
| Dental open bite | 19 (8:11) | 28 |
| Skeletal open bite | 50 (7:43) | 72 |
| Angle Classification (M:F; Dental open bite:Skeletal open bite) | ||
| Class I | 44 (9:35; 13:31) | 64 |
| Class II | 16 (2:14; 2:14) | 23 |
| Class III | 9 (4:5; 4:5) | 13 |
| Previous orthodontic treatment | ||
| Yes (Extraction vs. Non-extraction) | 13 (6 vs. 7) | 19 |
| None | 56 | 81 |
| Third molar present at T1 | 18 | |
| Extraction during treatment | 9 | 50 |
| Remained in arch | 9 | 50 |