PURPOSE: The introduction of modern 3D image acquisition systems has enabled researchers to develop novel procedures for personal identification. The present study aimed to assess differences between dental scans belonging to the same or different subjects, through an innovative 3D-3D superimposition and registration method. METHODS: Twelve subjects (6 males and 6 females) with pre- and post-orthodontic treatment dental casts were recruited. A 3D scan from each cast was obtained through a laser scanner and the 3D model of the upper first and second molar on the post-treatment cast was superimposed on the pre-treatment scan, for a total of 12 matches and 100 mismatches. Point-to-point RMS (root mean square) distance was then calculated. Student's t test verified possible statistically significant differences according to group (matches/mismatches; p < 0.05). RESULTS: In case of matches, on average the point-to-point distance RMS was 0.29 mm (SD: 0.08 mm), while it was 0.94 mm (SD: 0.30 mm) for mismatches, with a statistically significant difference (p < 0.001). CONCLUSIONS: Results show that the novel procedure was able to distinguish matches from mismatches through an RMS threshold (0.50 mm): a possible method for personal identification is described, which needs to be verified through the application to a larger sample of casts.
Quantification of odontological differences of the upper first and second molar by 3D-3D superimposition : a novel method to assess anatomical matches / D. Gibelli, D. De Angelis, F. Riboli, C. Dolci, C. Cattaneo, C. Sforza. - In: FORENSIC SCIENCE, MEDICINE AND PATHOLOGY. - ISSN 1547-769X. - 15:4(2019 Dec), pp. 570-573.
|Titolo:||Quantification of odontological differences of the upper first and second molar by 3D-3D superimposition : a novel method to assess anatomical matches|
GIBELLI, DANIELE MARIA (Co-primo) (Corresponding)
DE ANGELIS, DANILO (Co-primo)
CATTANEO, CRISTINA (Penultimo)
SFORZA, CHIARELLA (Ultimo)
|Parole Chiave:||3D superimposition; Anatomy; Root mean square (RMS); Upper molars|
|Settore Scientifico Disciplinare:||Settore BIO/16 - Anatomia Umana|
|Data di pubblicazione:||dic-2019|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s12024-019-00140-3|
|Appare nelle tipologie:||01 - Articolo su periodico|
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