Forensic dental age estimation by measuring root dentin translucency area using a new digital technique.

Area of Science:

• Forensic Anthropology
• Dental Age Estimation

Background:

• Dentin translucency measurement is a recognized method for estimating postmortem age.
• Assessing age using translucency area may offer advantages over length measurements.
• Manual area measurement is difficult, necessitating a more efficient approach.

Purpose of the Study:

• To introduce and evaluate a novel digital method for measuring dentin root translucency area.
• To compare the accuracy of digital area measurements with traditional length measurements for forensic age estimation.

Main Methods:

• A digital method using standard computer hardware and software was developed.
• Dentin sections (250 μm thickness) from 100 teeth (age 19-82) were analyzed for translucency area and length.
• Regression analysis was performed, and formulae were tested on a control sample (n=33, age 21-85).

Main Results:

• Regression analysis showed length had a slightly higher correlation with age (R=0.62) than area (R=0.60).
• However, digital area measurements resulted in a smaller mean absolute difference (8.3 years) compared to length (8.8 years) in the control sample.
• Area measurements also showed a higher frequency of estimates within ±10 years (73%) than length measurements (67%).

Conclusions:

• Digital measurement of dentin root translucency area is a viable alternative to length for forensic age estimation.
• The digital area method demonstrates potential for improved accuracy and error frequency in age determination.
• This digital approach enhances the practicality and reliability of using dentin translucency in forensic science.