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Dental age estimation in Somali children and sub-adults combining permanent teeth and third molar development |
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| Authors: | Metsäniitty Mari Waltimo-Sirén Janna Ranta Helena Fieuws Steffen Thevissen Patrick |
| Institution: | 1.Department of Forensic Medicine, University of Helsinki and National Institute for Health and Welfare, Kytösuontie 11, 00300, Helsinki, Finland ;2.Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Kytösuontie 9, 00014, Helsinki, Finland ;3.Department of Forensic Medicine, University of Helsinki, Kytösuontie 11, 00300, Helsinki, Finland ;4.Leuven Biostatistics and Statistical Bioinformatics Centre (L-BioStat), University of Leuven, Kapucijnenvoer 35, 3000, Leuven, Belgium ;5.Department of Imaging & Pathology, Forensic Odontology, KU Leuven Campus Saint Raphael 7, Block A, box 7001, 3000, Leuven, Belgium ; |
| Abstract: | Estimation of an individual’s age has important applications in forensics. In young individuals, it often relies on separate evaluations of permanent teeth (PT) and third molars (TM) development. Here, we analysed the age prediction performance of combined information from PT and TM in an unusual sample of healthy Somalis, born and living in Finland. PT development was staged according to Demirjian et al. (Hum Biol, 1973) and TM development according to Köhler et al. (Ann Anat, 1994), using panoramic radiographs from 803 subjects (397 males, 406 females) aged 3–23 years. A sex-specific Bayesian age-estimation model for the multivariate distribution of the stages conditional on age was fitted on PT, TM and PT and TM combined. The age-estimation performances were validated and quantified. The approach combining PT and TM only overestimated age with an ME of − 0.031 years in males and − 0.011 years in females, indicating the best age prediction performance. |
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