Table 3. TDIs (n, %) according to Andreasen et al 15 : classification and the injured tooth .
| TDI | Primary teeth n (%) |
Permanent teeth n (%) |
|---|---|---|
| Abbreviation: TDI, traumatic dental injury. ap < 0.05 between primary and permanent teeth. | ||
| Infraction | 0 (0) | 2 (0.7) |
| Enamel-dentin fracture without pulp involvement | 37 (19.8) a | 131 (33.5) a |
| Enamel-dentine fracture with pulp involvement | 24 (13.1) | 43 (11) |
| Root fracture | 10 (5.1) | 20 (5) |
| Concussion | 12 (6.3) | 32 (8.2) |
| Subluxation | 19 (10.1) | 50 (12.8) |
| Extrusion | 4 (2.1) | 10 (2.5) |
| Intrusion | 28 (14.8) a | 14 (3.6) a |
| Lateral luxation | 37 (19.8) a | 50 (12.8) a |
| Avulsion | 17 (8.9) | 39 (10) |
| Injured tooth | ||
| Upper central incisor | 133 (70.7) | 243 (62.1) |
| Upper lateral incisors | 26 (13.8) | 104 (26.6) |
| Upper canine | 7 (3.7) | 1 (0.3) |
| Upper posterior | 4 (2.1) | 2 (0.5) |
| Lower central incisor | 8 (4.3) | 30 (7.7) |
| Lower lateral incisor | 5 (2.7) | 11 (2.8) |
| Lower canine | 3 (1.6) | 0 (0) |
| Lower posterior | 2 (1.1) | 0 (0) |