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Dental age estimation standards for a Western Australian population
Shalmira Karkhanis1, Peter Mack1, Daniel Franklin1
1Centre for Forensic Anatomy and Biological Sciences, School of Anatomy, Physiology and Human Biology, The University of Western Australia, M420, 35 Stirling Hwy, Crawley, 6009 Western Australia, Australia.
Forensic Science International
|September 8, 2015
Summary
This study developed new dental age estimation standards for Western Australian children using digital X-rays. These standards provide accurate, non-invasive age assessment for the local juvenile population.
Area of Science:
- Forensic Anthropology
- Developmental Biology
- Radiology
Background:
- Juvenile age estimation relies on dental and skeletal development, with dental development being less affected by external factors.
- Current dental age estimation standards lack contemporary data for Western Australian populations.
- Radiographic analysis of tooth formation is a foundational method for age estimation.
Purpose of the Study:
- To develop statistically quantified radiographic age estimation standards for a Western Australian juvenile population.
- To address the paucity of contemporary dental age estimation data for this demographic.
- To provide a reliable, non-invasive method for forensic and anthropological applications.
Main Methods:
- Analysis of 392 digital orthopantomograms (202 male, 190 female) from Western Australian individuals.
- Assessment of dental development and root resorption following Moorrees et al.
- Analysis of alveolar eruption following Bengston, with polynomial regression models formulated from dental development stages.
Main Results:
- Developed statistically quantified age estimation standards with prediction accuracy ranging from ±0.998 to 2.183 years.
- Validated prediction accuracy using a cross-validation sample of 30 film orthopantomograms.
- Created a visual atlas of dental development and eruption for pooled sex samples.
Conclusions:
- The developed standards offer a non-invasive and statistically validated approach for accurate dental age estimation in Western Australian juveniles.
- These standards fill a critical data gap for forensic and anthropological assessments in the region.
- The study provides a robust tool for determining age in juvenile individuals based on dental development.
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