Age estimation of adults from dental radiographs |
| |
| Affiliation: | 1. Department of Oral Pathology and Section for Forensic Odontology, University of Oslo, P. O. Box 1109, Blindern, Oslo, Norway;2. Institute of Community Dentistry, Dental Faculty, University of Oslo, Oslo, Norway;1. Department of Pediatric Dentistry and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, 61471, Saudi Arabia;2. Department of Periodontics and Community Dental Sciences, College of Dentistry, King Khalid University, Abha, 61471, Saudi Arabia;1. AgEstimation Project, Institute of Legal Medicine, University of Macerata, Macerata, Italy;2. School of Science and Technology, University of Camerino, Camerino, Italy;3. Institute of Legal Medicine, University of Macerata, Macerata, Italy;1. Departamento de Odontologia Social da Faculdade de Odontologia da Universidade de São Paulo (FOUSP), São Paulo, Brazil;2. Department of Dental Anthropology, School of Dental Medicine, University of Zagreb, Zagreb, Croatia;3. Laboratorio di Antropologia e Odontologia Forense (LABANOF), Institute of Legal Medicine, University of Milan, Milan, Italy;4. AgEstimation Project, Institute of Legal Medicine, University of Macerata, Macerata, Italy;1. Section of Forensic Pathology, Institute of Forensic Medicine, University of Copenhagen, Copenhagen, Denmark;2. Forensic Dentistry, Department of Oral Health Sciences, KU Leuven & Dentistry, University Hospitals Leuven, Belgium;3. Department of Anthropology (ADBOU), Institute of Forensic Medicine, University of Southern Denmark, Denmark;1. Department of Pediatric Dentistry, School of Dentistry, International Medical University, Kuala Lumpur 57000, Malaysia;2. Paediatric Dentistry & Orthodontics, Faculty of Dentistry, University of Hong Kong, Hong Kong;3. Department of Paediatric Dentistry, School of Dentistry, University of Western Australia, Perth, WA 6009, Australia;4. Department of Orthodontics, Floor 22, Tower Wing, St Thomas Street, King''s College Dental Institute, London SE1 9RT, United Kingdom;1. Department of Oral Medicine and Radiology, New Horizon Dental College and Research Institute, Bilaspur, Chhattisgarh, India;2. Department of Conservative Dentistry and Endodontics, New Horizon Dental College and Research Institute, Bilaspur, Chhattisgarh, India;3. Department of Public Health Dentistry, Government Dental College, Raipur, Chhattisgarh, India;4. Department of Oral and Maxillofacial Pathology, Daswani Dental College, Kota, Rajasthan, India;5. Department of Orthodontics, New Horizon Dental College and Research Institute, Bilaspur, Chhattisgarh, India |
| |
| Abstract: | Previous studies have shown that with advancing age the size of the dental pulp cavity is reduced as a result of secondary dentine deposit, so that measurements of this reduction can be used as an indicator of age. The aim of the present study was to find a method which could be used to estimate the chronological age of an adult from measurements of the size of the pulp on full mouth dental radiographs. The material consisted of periapical radiographs from 100 dental patients who had attended the clinics of the Dental Faculty in Oslo. The radiographs of six types of teeth from each jaw were measured: maxillary central and lateral incisors and second premolars, and mandibular lateral incisors, canines and first premolars. To compensate for differences in magnification and angulation on the radiographs, the following ratios were calculated: pulp/root length, pulp/tooth length, tooth/root length and pulp/root width at three different levels. Statistical analyses showed that Pearson's correlation coefficient between age and the different ratios for each type of tooth was significant, except for the ratio between tooth and root length, which was, therefore, excluded from further analysis. Principal component analyses were performed on all ratios, followed by regression analyses with age as dependent variable and the principal components as independent variables. The principal component analyses showed that only the two first of them had significant influence on age, and a good and easily calculated approximation to the first component was found to be the mean of all the ratios. A good approximation to the second principal component was found to be the difference between the mean of two width ratios and the mean of two length ratios, and these approximations of the first and second principal components were chosen as predictors in regression analyses with age as the dependent variable. The coefficient of determination (r2) for the estimation was strongest when the ratios of the six teeth were included (r2 = 0.76) and weakest when measurements from the mandibular canines alone were included (r2 = 0.56). Measurement on dental radiographs may be a non-invasive technique for estimating the age of adults, both living and dead, in forensic work and in archaeological studies, but the method ought to be tested on an independent sample. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
