Table 1.
Probands: Primary Dentition with at Least 1 Dental Anomaly.
| Anomaly | Case Proband (n = 466), n (%) | Control Proband (n = 156), n (%) | P Value |
|---|---|---|---|
| Right maxilla | |||
| Hypoplasia | 16 (3) | 4 (2) | 0.61 |
| Microdontia | 5 (1) | 0 | 0.33 |
| Impacted | 0 | 0 | NA |
| Rotated | 96 (21) | 18 (11) | 0.005 |
| Displaced | 52 (11) | 4 (2) | 4E-04 |
| Agenesis | 23 (5) | 0 | 0.001 |
| Supernumerary | 13 (3) | 0 | 0.03 |
| Any anomaly | 145 (31) | 24 (14) | 2E-05a |
| Any anomalyb | 53 (11) | 4 (2) | 2E-04 |
| Left maxilla | |||
| Hypoplasia | 16 (3) | 5 (3) | 1.00 |
| Microdontia | 8 (2) | 0 | 0.12 |
| Impacted | 0 | 0 | NA |
| Rotated | 107 (23) | 21 (13) | 0.005 |
| Displaced | 67 (14) | 1 (<1) | 1E-08a |
| Agenesis | 39 (8) | 0 | 6E-06a |
| Supernumerary | 13 (3) | 0 | 0.03 |
| Any anomaly | 163 (35) | 27 (16) | 3E-06a |
| Any anomalyb | 66 (14) | 5 (3) | 2E-05a |
| Maxilla | |||
| Hypoplasia | 24 (5) | 6 (4) | 0.53 |
| Microdontia | 10 (2) | 0 | 0.07 |
| Impacted | 0 | 0 | NA |
| Rotated | 142 (30) | 29 (17) | 0.001 |
| Displaced | 97 (21) | 5 (3) | 3E-09a |
| Agenesis | 55 (12) | 0 | 3E-09a |
| Supernumerary | 25 (5) | 0 | 7E-04 |
| Any anomaly | 209 (45) | 36 (22) | 1E-09a |
| Any anomalyb | 96 (21) | 6 (4) | 3E-08a |
| Mandible | |||
| Hypoplasia | 4 (<1) | 1 (<1) | 1.00 |
| Microdontia | 3 (<1) | 0 | 0.57 |
| Impacted | 3 (<1) | 0 | 0.57 |
| Rotated | 108 (23) | 29 (17) | 0.15 |
| Displaced | 14 (3) | 3 (2) | 0.58 |
| Agenesis | 1 (<1) | 0 | 1.00 |
| Supernumerary | 3 (<1) | 0 | 0.57 |
| Any anomaly | 120 (26) | 31 (19) | 0.07 |
| Any anomalyb | 14 (3) | 1 (<1) | 0.13 |
NA, not applicable.
a
Indicates significance (P < 1.5E-04).
b
Any anomaly without malposition (displacement and rotation).