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Human Dental Age Estimation by Calculation of Pulp–Tooth Volume Ratios Yielded on Clinically Acquired Cone Beam Computed Tomography Images of Monoradicular Teeth

Authors

  • Hazha Star D.D.S.,

    1. Forensic Odontology Department, Faculty of Medicine, School of Dentistry, Katholieke Universiteit Leuven, Kapucijnenvoer 7, B-3000 Leuven, Belgium.
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  • Patrick Thevissen M.Sc.,

    1. Forensic Odontology Department, Faculty of Medicine, School of Dentistry, Katholieke Universiteit Leuven, Kapucijnenvoer 7, B-3000 Leuven, Belgium.
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  • Reinhilde Jacobs Ph.D.,

    1. Oral Imaging Center, Faculty of Medicine, School of Dentistry, Katholieke Universiteit Leuven, Kapucijnenvoer 7, B-3000 Leuven, Belgium.
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  • Steffen Fieuws Ph.D.,

    1. I-BioStat, Katholieke Universiteit Leuven and Universiteit Hasselt, Kapucijnenvoer 35, Blok D, Bus 7001, B-3000 Leuven, Belgium.
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  • Tore Solheim Ph.D.,

    1. Department of Oral Biology, Dental Faculty, University of Oslo, Box 1052 Blindern, 0316 Oslo, Norway.
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  • Guy Willems Ph.D.

    1. Forensic Odontology Department, Faculty of Medicine, School of Dentistry, Katholieke Universiteit Leuven, Kapucijnenvoer 7, B-3000 Leuven, Belgium.
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  • Presented at the 61st Annual Meeting of the American Academy of Forensic Sciences, February 16–21, 2008, in Denver, CO.

Additional information and reprint requests:
Professor Guy Willems, Ph.D.
Katholieke Universiteit Leuven
Department of Dentistry, Oral Pathology and Maxillo-Facial Surgery
Forensic Odontology
Kapucijnenvoer 7
B-3000 Leuven
Belgium
E-mail: guy.willems@med.kuleuven.be

Abstract

Abstract:  Secondary dentine is responsible for a decrease in the volume of the dental pulp cavity with aging. The aim of this study is to evaluate a human dental age estimation method based on the ratio between the volume of the pulp and the volume of its corresponding tooth, calculated on clinically taken cone beam computed tomography (CBCT) images from monoradicular teeth. On the 3D images of 111 clinically obtained CBCT images (Scanora®3D dental cone beam unit) of 57 female and 54 male patients ranging in age between 10 and 65 years, the pulp–tooth volume ratio of 64 incisors, 32 canines, and 15 premolars was calculated with Simplant® Pro software. A linear regression model was fit with age as dependent variable and ratio as predictor, allowing for interactions of specific gender or tooth type. The obtained pulp–tooth volume ratios were the strongest related to age on incisors.

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