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Some inconsistencies in Demirjian's method
Giuseppe Quaremba1, Claudio Buccelli2, Vincenzo Graziano2
1Department of Advanced Biomedical Sciences, University of Naples "Federico II"-5, Via Pansini, 80131 Naples, Italy; Department of Industrial Engineering, Division of Mechanics and Energetics, University of Naples "Federico II"-21, Via Claudio, 80125 Naples, Italy.
Forensic Science International
|January 9, 2018
Summary
This study reveals Demirjian's dental maturity scoring system often overestimates age in children. A new mathematical approach highlights biological inconsistencies, suggesting its unsuitability for forensic age assessment, especially for ages 14-16.
Area of Science:
- Forensic Anthropology
- Developmental Biology
- Mathematical Modeling
Background:
- Accurate age assessment is crucial for asylum seekers and legal cases involving minors.
- Demirjian's dental maturity score is a widely used method for estimating chronological age.
- Existing methods may have limitations in specific forensic contexts.
Purpose of the Study:
- To evaluate the biological compatibility of Demirjian's dental maturity scores with chronological age.
- To identify potential inaccuracies in age estimation using Demirjian's method.
- To propose an improved analytical approach for forensic age assessment.
Main Methods:
- Utilized an algorithm based on constrained graph theory and combinatory analysis.
- Employed an indirect method: selecting chronological ages, identifying corresponding maturity scores, and determining all possible dental stage combinations.
- Assessed the biological congruity of dental maturity stages against selected chronological ages.
Main Results:
- The mathematical approach identified dental development inconsistencies within Demirjian's scoring system.
- Demonstrated that Demirjian's method tends to overestimate chronological age.
- Highlighted specific age ranges, particularly 14-16 years, where overestimation is more pronounced.
Conclusions:
- Demirjian's method, while standard for dental maturity, exhibits limitations for forensic age estimation.
- The proposed mathematical approach reveals biological incompatibilities in age assessment.
- The method is deemed unsuitable for certain forensic scenarios, especially for adolescents aged 14-16.