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[Accuracy of age estimation from orthopantomograph using Demirjian's method]
Jiang Tao1, Yi Wang, Rui-jue Liu
1Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.
Fa Yi Xue Za Zhi
|September 28, 2007
Summary
The Demirjian method accurately estimates dental age in individuals aged 11-16 years. However, this method shows limitations for individuals over 17 years old.
Area of Science:
- Forensic Medicine
- Anthropology
- Odontology
Background:
- Developing teeth are crucial for age estimation across various scientific disciplines.
- The Demirjian method is a widely used scale for assessing dental maturity.
Purpose of the Study:
- To evaluate the accuracy of the Demirjian method for age estimation in forensic clinical medicine.
- To determine the reliability of dental age assessment using panoramic radiographs and the Demirjian scale.
Main Methods:
- Orthopantomographs of 828 healthy children (279 boys, 549 girls) aged 11-19 years were analyzed.
- Tooth formation was staged using the Demirjian's dental maturity scale.
- Dental age was compared to chronological age using t-tests.
Main Results:
- The Demirjian method demonstrated overestimation of age in the 11-16 year age group.
- The method exhibited limitations in accurately assessing age for individuals older than 17 years.
Conclusions:
- The Demirjian method provides the most precise age estimations for developing teeth in the 11-16 year age range, indicated by the narrowest 95% confidence interval.
- The study highlights age-related limitations of the Demirjian method in forensic age assessment.
