title: Three-dimensional modeling of the various volumes of canines to determine age and sex: a preliminary study.
abstract: Canines are usually used in anthropological and forensic sciences for sex and age determination. The best methods to estimate age are based on secondary dentine apposition, evaluated from periapical X-rays. The aim of this study was to propose a new method of sex and age estimation using 3D models to obtain more precise predictions using tooth volumes. Fifty-eight dental CT scans of patients aged 14-74 with a well-balanced sex ratio composed the sample. One hundred and thirty-three healthy canines were modeled (Mimics 12.0). The sample was divided into a training sample and a validation sample. An age formula was determined using the "pulp volume/tooth volume" ratio. Sex prediction was adjusted with total volumes. Applying the equations to the validation sample, no significant difference was found between the real and predicted ages, and 100% of the sex predictions were correct. This preliminary study gives interesting results, and this method is worth being tested on a larger data sample.
authors.affiliation: Unité Mixte de Recherche 6578/CNRS, EFS-Université de la Méditerranée, 51, Boulevard Pierre Dramard 13916 Marseille Cedex 20, France. delphine.tardivo@gmail.com
authors.forename: Delphine
authors.initials: D
authors.lastname: Tardivo
authors.forename: Julien
authors.initials: J
authors.lastname: Sastre
authors.forename: Michel
authors.initials: M
authors.lastname: Ruquet
authors.forename: Lionel
authors.initials: L
authors.lastname: Thollon
authors.forename: Pascal
authors.initials: P
authors.lastname: Adalian
authors.forename: Georges
authors.initials: G
authors.lastname: Leonetti
authors.forename: Bruno
authors.initials: B
authors.lastname: Foti
mesh_terms: D000293:Adolescent; D000328:Adult; D000366:Age Determination by Teeth / Q000379:methods*; D000368:Aged; D003481:Cuspid / Q000000981:diagnostic imaging*; D003782:Dental Pulp / Q000000981:diagnostic imaging; D005260:Female; D005553:Forensic Dentistry; D006801:Humans; D021621:Imaging, Three-Dimensional; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012727:Sex Characteristics; D014057:Tomography, X-Ray Computed; D055815:Young Adult