Table 2.
Comparison between chronologic age and dental age (Willem’s method) in male and female (age in years)
| Age groups | n | CA, mean (SD) | Willem’s method, mean (SD) | P | |||
|---|---|---|---|---|---|---|---|
| Male | Female | Male | Female | Male | Female | ||
| 9-9.99 | 20 | 9.3081 (0.1653) | 9.503 (0.3612) | 8.785 (0.707) | 9.27 (0.817) | 0.04 | 0.272 |
| 10-10.99 | 20 | 10.4892 (0.3594) | 10.2872 (0.2351) | 10.701 (1.265) | 9.376 (1.319) | 0.545 | 0.037 |
| 11-11.99 | 20 | 11.4661 (0.2706) | 11.5331 (0.2776) | 11.704 (1.207) | 11.89 (1.11) | 0.516 | 0.326 |
| 12-12.99 | 20 | 12.3307 (0.3346) | 12.5905 (0.2303) | 11.93 (1.06) | 12.329 (0.849) | 0.298 | 0.397 |
| 13-13.99 | 20 | 13.506 (0.3454) | 13.6281 (0.2219) | 13.071 (0.916) | 13.337 (0.791) | 0.152 | 0.344 |
| 14-14.99 | 20 | 14.5993 (0.3508) | 14.5993 (0.3508) | 13.932 (0.972) | 13.272 (0.404) | 0.078 | 0.001 |
| 15-15.99 | 20 | 15.3418 (0.2472) | 15.5408 (0.3201) | 15.948 (0.172) | 15.018 (1.295) | 0.001 | 0.26 |
| Total | 140 | 12.4344 (2.0632) | 12.4913 (2.0598) | 12.295 (2.341) | 12.07 (2.189) | 0.253 | 0.001 |
CA: Chronological age, SD: Standard deviation