Table 1. Distribution of missing teeth across quadrant and tooth number.
| Tooth number* | Upper right (%) | Upper left (%) | Lower right (%) | Lower left (%) | Total (%) |
|---|---|---|---|---|---|
| Agenesis group | |||||
| 1 | 3 (0.25) | 2 (0.2) | 29 (2.4) | 30 (2.5) | 64 (5.3) |
| 2 | 85 (7) | 83 (6.8) | 15 (1.2) | 18 (1.5) | 201 (16.5) |
| 3 | 14 (1.2) | 13 (1.1) | 5 (0.4) | 4 (0.3) | 36 (3) |
| 4 | 20 (1.6) | 21 (1.7) | 15 (1.2) | 15 (1.2) | 71 (5.8) |
| 5 | 60 (4.9) | 52 (4.3) | 117 (9.6) | 117 (9.6) | 346 (28.4) |
| 6 | 5 (0.4) | 4 (0.3) | 9 (0.7) | 7 (0.6) | 25 (2.1) |
| 7 | 13 (1.1) | 14 (1.2) | 15 (1.2) | 14 (1.2) | 56 (4.6) |
| 8 | 101 (8.3) | 105 (8.6) | 104 (8.5) | 108 (8.9) | 418 (34.3) |
| Total | 301 (24.7) | 294 (24.2) | 309 (25.4) | 313 (25.7) | 1217 (100) |
| Control group | |||||
| 8 | 37 (25.7) | 32 (22.2) | 39 (27.1) | 36 (25) | 144 (100) |
Note:
*
Tooth number 1 stands for all central incisors (11, 21, 31, 41) and so on. For example, Upper right 1 is tooth 11 in the FDI system.