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Age estimation using pulp/tooth area ratio in maxillary canines-A digital image analysis.
Manjushree Juneja1, Yashoda B K Devi2, N Rakesh2
1Department of Oral Medicine and Radiology, School of Dental Sciences, Sharda University, Greater Noida, Uttar Pradesh, India.
Journal of Forensic Dental Sciences
|September 2, 2014
Summary
A new regression equation using canine radiographic measurements can accurately estimate chronological age in individuals from Karnataka, aiding medico-legal and anthropological studies.
Area of Science:
- Forensic Anthropology
- Dental Radiology
Background:
- Accurate age determination is crucial for medico-legal and anthropological research.
- Radiographs can indirectly assess secondary dentine deposition by observing pulp area reduction.
Purpose of the Study:
- To develop a population-specific regression equation for chronological age estimation.
- To investigate the correlation between dental morphological variables and age.
Main Methods:
- Selected 200 patients (18-72 years) from Karnataka.
- Utilized panoramic radiographs of maxillary canines, digitized and processed using ImageJ.
- Recorded variables: pulp/root length (p), pulp/tooth length (r), pulp/root width at ECJ (a), mid-root (c), midpoint (b), and pulp/tooth area ratio (AR).
Main Results:
- Two variables, pulp/tooth area ratio (AR) and pulp/root width at midpoint (b), significantly contributed to the age estimation model.
- The derived regression equation (Age = 87.305 - 480.455(AR) + 48.108(b)) explained 96% of the total variance.
- The model demonstrated a low standard error of estimate (3.0186 years).
Conclusions:
- A significant correlation exists between age and the morphological variables AR and b.
- The developed regression equation is potentially effective for estimating the chronological age of individuals of Karnataka origin.
