Background: Age estimation is one of most important factors employed in establishing the   identity of an individual and in dentistry.it is performed to determine dental age of child patient    which in many instances is delayed or advanced in relation to their chronological age. Orthodontic  and Myofunctional treatments are planned as per dental age rather than chronological age of
child. Demirjian’s method of age estimation was found to differ in different regions all over  world. Aim: Evaluate the accuracy of dental age estimation, in children aged 6-10 years, using modified  Demirjian’s Method in region of Mahe and to determine its applicability in Mahe region. Materials & Methodology: Study sample consisted of orthopantomograms of 160 subjects (80
boys and 80 girls). Using Demirjian’s method, modified by Acharya, all OPGs were analysed, in  which each tooth stage was rated to obtain a total dental maturity score which was substituted into regression formula to get dental age of each patient. Result was tabulated and statistically analysed. The differences between CA and DA were analysed by the paired sample t-test and
Pearson’s correlation analysis. Results: The results of study showed that Demirjian's technique overestimated CA by 2.8(±2.1)
years and 2.6(±1.9) years in girls and boys respectively, in children of Mahe. Mahe-specific  regression formula was derived as a correction factor. Conclusion:Modified Demirjian’s method is an area specific method of dental age determina tion   and will be applicable to children of Mahe only by using a Mahe specific regression formula