Application of the method of Kvaal et al. to digital orthopantomograms |
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Authors: | M I Landa P M Garamendi M C Botella I Alemán |
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Institution: | (1) Bizkaia Division, Forensic Clinical Department, Basque Institute of Legal Medicine, C/ Buenos Aires, 6, 48001 Bilbao, Spain;(2) Forensic Pathology Department, Institute of Legal Medicine from Huelva, Huelva, Spain;(3) Laboratory of Anthropology, Medicine Faculty, University of Granada, Granada, Spain |
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Abstract: | Estimation of age in individuals has received considerable attention in the forensic literature. The reduction of size of
dental pulp cavity as a result of secondary dentin deposit with increasing age could be used as an indicator of age. This
regression change, apart from morphological techniques, can also be analysed by radiological techniques. In 1995, Kvaal et
al. reported a new method for estimating the chronological age of adults based on the relationship between age and the pulp
size on periapical dental radiographs. In 2005, Paewinsky et al. reported specific regression formulae for dental age calculation.
The aim of this work was to evaluate the reproducibility of the original method of Kvaal et al. on digital panoramic radiographs
as well as to analyse the application of age-estimation formulae reported in the literature. Orthopantomograms (OPGs) of 100
patients aged between 14 and 60 years old from a private radiology department in Bilbao were selected at random. According
to the reported technique, three mandibular teeth were evaluated in each orthopantomogram. The results showed that the method
reported by Kvaal at al. cannot be applied to direct digital OPGs. The values of age estimation obtained using regression
formulae analysed on digital images were so distant from the real ages that this method must be discouraged as being a reliable
one to estimate age on a direct digital OPGs sample. |
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Keywords: | Age estimation Dental orthopantomograms Digital radiology Secondary dentin |
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