Articlegreen2019

Age and sex estimation based on pulp cavity volume using cone beam computed tomography: development and validation of formulas in a Brazilian sample

Vanessa Moreira Andrade · Rocharles Cavalcante Fontenele · Casimiro Abreu Possante de Almeida · Andréa de Castro Domingos Vieira · Francisco Carlos Groppo · Deborah Queiroz Freitas +1 more

48 citations0/0 files storedDentomaxillofacial Radiology

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Forensic Anthropology and Bioarchaeology Studies Endodontics and Root Canal Treatments Dental Radiography and Imaging

Abstract

OBJECTIVES: To develop and validate formulas for age and sex estimation based on the pulp cavity volume of teeth using cone beam CT. METHODS: The sample was composed of 116 cone beam CT scans from Brazilian individuals of both sexes, ranging in age from 13 to 70 years. A total of 232 teeth (upper central incisors and canines) were evaluated. Two calibrated examiners determined pulp cavity volumes using the ITK-SNAP software. Pearson's correlation test was used to assess the correlation between chronological age and pulp volume. Linear and logistic regression models were developed for age and sex estimation, respectively, and were validated in another sample of 72 teeth. RESULTS: = -0.8738 for canines). The age estimation formulas showed good determination coefficients (adjusted R² = 0.7614 to 0.8367). For sex estimation, when the age was known, the coefficients were also good (adjusted R² = 0.649 to 0.812). However, when the age was unknown, the coefficients of the sex estimation formulas were low (adjusted R² = 0.047 to 0.393). Validation showed high accuracy of age estimation in individuals older than 35 years, as well as high accuracy of sex estimation when the age was known. CONCLUSIONS: Our formulas provided excellent results and can be applied to the Brazilian population. The best results were observed for age estimation in females and for sex estimation when the age was known.

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References

1977The Measurement of Observer Agreement for Categorical Data 2011Dental radiographic indicators, a key to age estimation 2009Age estimation based on three-dimensional measurement of mandibular central incisors in Japanese 2015A new age estimation procedure based on the 3D CBCT study of the pulp cavity and hard tissues of the teeth for forensic purposes: A pilot study 2015Age estimation based on pulp chamber volume of first molars from cone-beam computed tomography images 2016Age estimation based on pulp cavity/chamber volume of 13 types of tooth from cone beam computed tomography images 2010Age estimation using microfocus X-ray computed tomography of lower premolars 2017Age estimation based on pulp/tooth volume ratio measured on cone-beam CT images

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