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  3. 12. A Comparison of the Accuracy of the London Atlas and Demirjian Age Estimation Methods Based on Panoramic Radiography of Developing Teeth
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12. A Comparison of the Accuracy of the London Atlas and Demirjian Age Estimation Methods Based on Panoramic Radiography of Developing Teeth

 

Laila Azher Jawa1, Zehra Azher Jawa2 and Zubair Hassan Awaisi1

ABSTRACT

Objective: To compare two age estimation methods in children by using Demirjian’s and the London Atlas of Tooth Development methods and to evaluate among these two methods which is more accurate.

Study Design: Cross-sectional study

Place and Duration of Study: This study was conducted at the Department of Orthodontics at Nishtar Institute of Dentistry, Multan from May 2021 to February 2022.

Materials and Methods: To conduct this research we included OPGS of 100 children of 7 and 16 years of age group, proforma each patient was filled containing their date of birth and date of X-ray done. Then we assessed each radiograph to find out the developmental stage of tooth in respective region. Dental age estimation was calculated by using Demirjian and London Atlas methods and the difference and correlations between these two methods and chronological age was assessed. Differences and associations between two selected dental age estimation methods and chronological age were evaluated by paired t-test and Pearson’s correlation analysis. P value ≤0.05 was considered as significant.

Results: In this study the mean chronological age evaluated was 10.23±2.7 years, while in London atlas method it was estimated as 10.11±2.91 and in Demirjian 10.44±2.5 years. In few number of individuals, Demirjian’s method slightly over-estimated the age in females than males, while in London Atlas it underestimated the age in girls than boys, but the overall difference was not statistically significant. Both of the methods which we used in our study to determine dental age have no significant differences between them in terms of accuracy. P value for London Atlas was 0.14 and for Demirijian 0.15.

Conclusion: These two methods are reliable in estimating age of individuals of unknown chronological age.

Key Words: Age estimation, Dental age. Demirjian method. London Atlas of tooth development and eruption method, Chronological age

Citation of article: Jawa LA, Jawa ZA, Awaisi ZH. A Comparison of the Accuracy of the London Atlas and Demirjian Age Estimation Methods Based on Panoramic Radiography of Developing Teeth. Med Forum 2022;33(12):48-51.