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Table 1: Comparison of mean dental age estimated by Haavikko's, Demirjian's and Willems methods with chronologic age
| Descriptive statistics | |||||||||||||||
| N | Range | Minimum in years | Maximum in years | Mean in years | Std. deviation | ||||||||||
| Chronological age | 102 | 9.00 | 6.30 | 15.30 | 12.27 | 1.67 | |||||||||
| Haavikko's method | 102 | 7.10 | 6.80 | 13.90 | 10.31 | 1.04 | |||||||||
| Demirjian's method | 102 | 8.80 | 7.10 | 15.90 | 12.81 | 1.81 | |||||||||
| Willems method | 102 | 11.60 | 3.90 | 15.50 | 12.06 | 1.80 | |||||||||
