Age estimation in children is not only important in clinically dentistry but also in forensic dentistry. The orthopantomograph samples of 259 healthy children aged between 5-15 years was selected and applied Cameriere et al regression equation. We observed that the median of the absolute values of the residuals was 0.6 years (interquartile range, IQR = 0.7 years) for girls and 0.7 years for boys (interquartile range, IQR = 0.8 years). The mean prediction error was 0.75 years for girls and 0.87 for boys. The concordance correlation coefficient was 0.89 between two observer rating.Hence this method can be use for age estimation in children in with other method. Key words: forensic dentistry, Cameriere et al regression equation, Haryana population. eeth formation is widely used to assess maturity and predict age. In clinical dentistry, this information aids in diagnosis and treatment planning [1]. The continuous patterns of tooth development can be observed on a longitudinal series of radiographs and various mineralization stages [2-6]. Previously number of methods have been proposed to determine dental age [7-15] but, the system developed by Demirijian has gained wide acceptance [9]. During developmental stages particularly in root formation, a notable difference between sexes arises with females being advanced when compared with males [9-18]. Previously Cameriere et al proposed a regression equation for age determination from Open and closed apices in children [16-17]. Recently it has been reported that Cameriere et al method more accurate than other methods [18]. It has been reported that teeth development is depend upon number of factors such as genetic factor, environmental factors, nutritional factors and geographical factors [4-7]. Hence the present study was planned to determine the accuracy of Cameriere et al equation on Haryana Population for age estimation from open and closed apices.