Abstract
Objectives
To evaluate the feasibility of using the pulp volume (Pv) to total volume (Tv) ratio (Pv:Tv), obtained from cone beam computed tomography (CBCT) scans of single-rooted teeth, for age estimation in a Brazilian population sample.
Methods
After obtaining approval from the ethics committee, the study commenced by applying inclusion criteria to screen CBCT scans, resulting in a probability-based sample of participants aged 18 years and older (ranging from 18 to 82 years, with a mean age of 46.44 years). A total of 517 single-rooted teeth, including maxillary central incisors (CI), mandibular canines (C), and mandibular first premolars (FP), were chosen based on excellent agreement values (> 0.9). Pv and Tv measurements were conducted using semi-automatic segmentation with ITK-SNAP 3.8 software. Statistical analysis was performed using Jamovi software, with a significance level set at 5% (α = 0.05).
Results
A strong negative correlation (r > −0.7) was observed between chronological age and the Pv:Tv ratio across all examined teeth. However, when conducting regression analysis with Pv:Tv data and chronological age as the independent variable, only the mandibular FP teeth exhibited a normal distribution. The resulting linear model demonstrated moderate predictive value (approximately 64%) in explaining the variance in chronological age, but caution should be exercised when interpreting these findings.
Conclusions
The method of measuring individual tooth volume using CBCT to estimate chronological age via Pv:Tv has been demonstrated as effective and reproducible within the Brazilian population sample.
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Acknowledgements
Thanks to the volunteer participants who provided their CBCT exams for use in the study and to the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES), which partially funded this study—Finance Code 001.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, 001, Ana Beatriz Raposo SOUZA
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We wish to disclose that there are no direct or potential conflicts of interest associated with this study. Furthermore, it is pertinent to mention that this research received partial funding through indirect support to the graduate program in which the study was conducted, as acknowledged in the acknowledgments section.
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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation Faculty of Dentistry of Nova Friburgo at the Federal Fluminense University and with the Helsinki Declaration of 1975, as revised in 2008 (5).
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Souza, A.B.R., Cruz, A.D. & Aguiar, M.F. Age estimation by volumetric analysis of teeth using cone beam computed tomography. Oral Radiol (2024). https://doi.org/10.1007/s11282-024-00750-w
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DOI: https://doi.org/10.1007/s11282-024-00750-w