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Age estimation by occlusal tooth wear.

Y K Kim¹, H S Kho, K H Lee

¹Department of Oral Medicine and Oral Diagnosis, College of Dentistry, Seoul National University, Korea.

Journal of Forensic Sciences

|April 27, 2000

Summary

A new tooth wear scoring system reliably estimates age, showing a strong correlation between wear and chronological age. This method offers accurate age estimation within +/-5 years for most individuals.

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Area of Science:

Forensic Anthropology
Dental Age Estimation
Bioarchaeology

Background:

Accurate age estimation is crucial in forensic and archaeological contexts.
Dental wear patterns offer potential indicators for aging individuals.
Existing methods for assessing tooth wear vary in reliability and applicability.

Purpose of the Study:

To evaluate the accuracy and reliability of a novel scoring system for quantifying tooth wear.
To determine the correlation between tooth wear and chronological age in a diverse sample.
To develop age estimation tables based on the new tooth wear scoring system.

Main Methods:

Dental stone casts from 383 volunteers with sound premolars and molars were analyzed.
A new scoring system was used to assess the degree of occlusal wear on all premolar and molar teeth.
Intra- and inter-examiner concordance was assessed to determine system reliability.
General Linear Models were employed to calculate age estimation tables and assess accuracy.

Main Results:

The new scoring system demonstrated high intra- and inter-examiner reliability.
A significant positive correlation was observed between tooth wear and age for all examined teeth in both sexes.
Males exhibited higher tooth wear scores than females.
The system achieved age estimation within +/-5 years for 61.8% of males and 63.3% of females.
Re-analysis with age-grouped data improved estimation accuracy.

Conclusions:

The developed tooth wear scoring system is a reliable and accurate method for age estimation.
This system provides a valuable tool for forensic anthropology and bioarchaeological research.
The findings support the use of dental wear as a significant biomarker for aging individuals.

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