Age estimation by pulp-to-tooth area ratio using cone-beam computed tomography: A preliminary analysis


Arpita Rai
Ashith Acharya
Venkatesh Naikmasur


Background: Age estimation of living or deceased individuals is an important aspect of forensic sciences. Conventionally, pulp-to-tooth area ratio (PTR) measured from periapical radiographs have been utilized as a nondestructive method of age estimation. Cone-beam computed tomography (CBCT) is a new method to acquire three-dimensional images of the teeth in living individuals. Aims: The present study investigated age estimation based on PTR of the maxillary canines measured in three planes obtained from CBCT image data. Settings and Design: Sixty subjects aged 20–85 years were included in the study. Materials and Methods: For each tooth, mid-sagittal, mid-coronal, and three axial sections—cementoenamel junction (CEJ), one-fourth root level from CEJ, and mid-root—were assessed. PTR was calculated using AutoCAD software after outlining the pulp and tooth. Statistical Analysis Used: All statistical analyses were performed using an SPSS 17.0 software program. Results and Conclusions: Linear regression analysis showed that only PTR in axial plane at CEJ had significant age correlation (r = 0.32; P< 0.05). This is probably because of clearer demarcation of pulp and tooth outline at this level.


How to Cite
Arpita Rai, Ashith Acharya, & Venkatesh Naikmasur. (2016). Age estimation by pulp-to-tooth area ratio using cone-beam computed tomography: A preliminary analysis. Journal of Forensic Dental Sciences, 8(3), 150–154.


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