Accuracy of Dental Age Estimation Using Demirjian's Eight-Teeth Method And Acharya’s Indian Formula In Central Kerala Population
Journal Title: International Journal of Medical Science and Innovative Research (IJMSIR) - Year 2018, Vol 3, Issue 3
Abstract
Background Age estimation is made possible by a variety of dental techniques, amongst which the radiological methods are more popular. The Demirjian's technique of age assessment based on tooth development stages has been extensively investigated in different population groups. However, several studies among the Indian population, using these formulas yielded under age estimation, which lead to the recent development of India-specific regression formula. Objectives To estimate the age of children and adolescents using Demirjian's 8-Teeth Method, Demirjian's formula and Acharya’s Indian formula, among Central Kerala Population and compare the effectiveness of Demirjian's formula with that of Acharya’s Indian formula. Method The study was conducted using 100 archived digital panoramic radiographs, 50 male and 50 female, aged between 6 to 18 years, which were predominantly pretreatment orthodontic radiographs of patients without any obvious developmental anomalies. The radiographs were interpreted using Demirjian's 8-teeth method and the dental age calculated using Demirjian's formula and Acharya's Indian formula. Both formulas were compared using paired 't' test (SPSS Statistics 16). Results Demirjian's method underestimated the dental age by 1.45 years in males and 1.71 years in females and average 1.58 years in total. Acharya's method overestimated the dental age by 0.51 years in males and 0.76 years in females and average 0.63 years in total. However, there was no statistically significant difference between chronological age and dental age in Acharya’s method (P>0.05). Conclusion As the absolute accuracy was better for Acharya's method compared with Demirjian method, we suggestAcharya's Indian formula is more effective in evaluating the dental age in Central Kerala population.
Authors and Affiliations
Twinkle S Prasad
Keywords
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