Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Age Estimation in Brazilian Adult Subpopulation by Calculating the Pulp/Tooth Ratio of the Maxillary Canine and Mandibular Second Premolar in Panoramic and Periapical Radiographs

Version 1 : Received: 5 February 2024 / Approved: 6 February 2024 / Online: 6 February 2024 (09:17:41 CET)

How to cite: Nery-Neto, I.; Guedes, O.A.; Estrela, L.R.D.A.; Cintra, L.T.A.; Estrela, C.R.D.A.; Estrela, C. Age Estimation in Brazilian Adult Subpopulation by Calculating the Pulp/Tooth Ratio of the Maxillary Canine and Mandibular Second Premolar in Panoramic and Periapical Radiographs. Preprints 2024, 2024020313. https://doi.org/10.20944/preprints202402.0313.v1 Nery-Neto, I.; Guedes, O.A.; Estrela, L.R.D.A.; Cintra, L.T.A.; Estrela, C.R.D.A.; Estrela, C. Age Estimation in Brazilian Adult Subpopulation by Calculating the Pulp/Tooth Ratio of the Maxillary Canine and Mandibular Second Premolar in Panoramic and Periapical Radiographs. Preprints 2024, 2024020313. https://doi.org/10.20944/preprints202402.0313.v1

Abstract

(1) Background/Objectives: Accurate determination of chronological age is crucial in legal dental identification. This study aimed to compare the effectiveness of different formulas in estimating the age of a Brazilian subpopulation by analyzing the pulp/tooth ratio of the maxillary canine and mandibular second premolar in panoramic and periapical radiographs. (2) Methods: The sample consisted of panoramic and periapical radiographs of 247 individuals. The file of each radiograph was opened in the Adobe Photoshop CS4® program to outline and obtain values in pixels for calculating the pulp/tooth ratio. Statistical analysis was conducted using the SPSS program, with a significance level set at 5%. (3) Results: The interclass correlation coefficient demonstrated excellent intra-observer agreement (0.990 – 0.999). The determination coefficients (R2) suggested that only 30-35% of the actual age results could be explained by the pulp/tooth ratio. Smallest differences were observed with Cameriere's formula for the mandibular second premolar on panoramic radiographs (+4.1 years). The greatest differences were found with the formulas for the mandibular second premolar in panoramic radiographs of the Korean (+12.5 years) and Portuguese (-12.1 years) populations. (4) Conclusions: The equations employed allowed for estimating the age of a Brazilian subpopulation and showed little agreement between the actual age and the estimated age.

Keywords

human identification; age estimation by teeth; forensic dental radiography; forensic science; forensic dentistry

Subject

Public Health and Healthcare, Public Health and Health Services

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