05 were regarded as significant. RESULTS This study was conducted in 321 patients (156 men and 165 women). Distribution of the patients according to gender selleckchem and sagittal classifications are shown in Table 1. Table 1 Gender distribution according to classes Chronologic age and dental age according to gender The chronological age range of the male patients was between 7.0 and 15.7 and the mean age was 11.84 �� 1.57 years. Their dental ages ranged from 7.8 to 15.1 and the mean was 12.12 �� 1.56 years. In male patients, the difference between chronological age and dental age was 0.33 years and this difference was statistically significant (t = 5.000, P < 0.001). Dental age was therefore greater than chronological age. There was also a strong linear relationship between dental age and chronological age (P < 0.
001). The chronological ages of the female patients ranged from 7.0 to 15.9 years and the mean age was 11.38 �� 1.70 years. Their dental ages ranged from 7.8 to 15.8 years and the mean age was 12.23 �� 1.87 years. The dental age of female patients was therefore greater than that of the male patients by 0.94 years. This difference was also statistically significant (t = 11948, P < 0.001). A stronger linear relationship between dental age and chronological age (P < 0.001) was found in girls. The difference between chronological age and dental age seen in the female patients was greater than the difference seen in the male patients. Chronological age and dental age according to the sagittal classification The mean chronological ages of patients with Class I, Class II and Class III malocclusions were 11.
71 �� 1.65 years, 12.29 �� 1.41 years and 10.98 �� 1.44 years, respectively. The corresponding mean dental ages were 12.05 �� 1.71, 12.49 �� 1.31 and 11.35 �� 1.60 years. Chronological age and dental age were compared in each group and were significantly different [Table 2]. Dental age was greater than chronological age in all classes. This was statistically significant for girls in all grades and male patients with Class I and Class II malocclusions (P < 0.01) while the statistical significance for male patients with Class III malocclusions was P < 0.05. Table 2 Differences in chronological age and dental age according to gender and classes Chronological ages by gender within each class were evaluated and the chronological ages of boys and girls with Class I and Class III malocclusions were similar.
The mean chronological age of the AV-951 boys with Class II malocclusions, however, was significantly higher than that of the girls with Class II malocclusions (P < 0.01). In terms of dental age, similar values were observed in boys and girls in each class. Dental age and chronological age differences between the groups were evaluated and the difference was found to be much greater in female patients than in male patients in both Class I (P = 0.029) and Class II (P < 0.