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      Age Estimation for Dental Patients Using Orthopantomographs

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          Abstract

          Objectives:

          The aim of this study was to conduct age estimates for dental patients using orthopantomographs (OPGs). The OPGs were selected by an independent author with respect to criteria and evaluated by two independent dentists. The results were compared to chronologic ages. The reliability of the estimates, concurrently made by the two independent dentists using OPGs, was also evaluated.

          Methods:

          In this retrospective study, the OPGs of 238 Turkish individuals of known chronological age, ranging from 1 to 60 years, were measured. Patients were then classified. Radiographs were evaluated by two independent dentists and age estimation was achieved according to the decades.

          Results:

          The truest age estimates made by the dentists were in the 1–10 years age range (89.6%), the most inaccurate age estimates were in the 41–50 years age range (41.7%). Results indicate that the accuracy of age estimation diminishes with age.

          Conclusions:

          Despite the variations related to the practitioners, in this study, there were no significant differences in age estimations between the two participant practitioners. Age estimation through evaluating OPGs was the most accurate in the first decade and the least in fourth decade. It can be concluded that OPGs are not adequate for accurate age estimation.

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          Most cited references17

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          Age estimation of adults from dental radiographs.

          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.
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            Age determination on teeth.

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              A review of the most commonly used dental age estimation techniques.

              This review of literature provides an overview of the most commonly used dental age estimation techniques and focuses on dental age estimation scoring systems in children and adults. In order to obtain a more reliable and reproducible age estimation the forensic odontologist should use several of these available methods whenever an age estimation in the living or dead is required.
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                Author and article information

                Journal
                Eur J Dent
                Eur J Dent
                European Journal of Dentistry
                Dental Investigations Society
                1305-7456
                1305-7464
                October 2010
                : 4
                : 4
                : 389-394
                Affiliations
                [a ] Institution of Forensic Medicine of the Ministry of Justice, Gaziantep Branch of the Forensic Medicine, Specialist of Forensic Medicine Gaziantep, Turkey
                [b ] Department of Restorative Dentistry, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey
                [c ] Department of Restorative Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey
                Author notes
                Corresponding author: Emine Sirin Karaarslan, Department of Restorative Dentistry, Faculty of Dentistry, Gaziantep University, 27310, Gaziantep, Turkey. Phone: +90 342 3606060/76614 Fax: +90 342 3610610, E-mail: karaarslan.emine@ 123456gmail.com
                Article
                dent04_p389
                2948737
                20922158
                e7946207-ae60-40d8-8477-bc7ccc71dfc2
                Copyright 2010 European Journal of Dentistry. All rights reserved.
                History
                Categories
                Original Articles

                Dentistry
                orthopantomographs,age estimation,forensic dentistry
                Dentistry
                orthopantomographs, age estimation, forensic dentistry

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