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Comparison of 2D OPG image versus orthopantomogram from 3D CBCT from the forensic point of view

[Display omitted] •The visual and metric correlation between 2D OPG and CBCT-generated OPG was confirmed.•The CBCT/OPG ratio of W/L indices in the canines and the 1st molars ranged in 83–99%.•There were no statically significant differences between the upper and lower jaw.•Multi-roots teeth superimp...

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Bibliographic Details
Published in:Legal medicine (Tokyo, Japan) Japan), 2021-02, Vol.48, p.101802-101802, Article 101802
Main Authors: Eliasova, Hana, Dostalova, Tatjana, Prochazka, Ales, Sediva, Eliska, Horacek, Martin, Urbanova, Petra, Hlinakova, Petra
Format: Article
Language:English
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Summary:[Display omitted] •The visual and metric correlation between 2D OPG and CBCT-generated OPG was confirmed.•The CBCT/OPG ratio of W/L indices in the canines and the 1st molars ranged in 83–99%.•There were no statically significant differences between the upper and lower jaw.•Multi-roots teeth superimposition – the average coincidence of images was 6.1%. Forensic dental identification has employed traditionally 2D digital radiological imaging techniques. More recently, 3D cone beam computer tomography (CBCT) data, widely applied in clinical dentistry, have been gradually used. The purpose of this study was to compare the precision and quality of 2D digital orthopantomogram (OPG) and 2D OPG images generated from cone beam computed tomography (CBCT). The study sample consisted of 50 patients with archived conventional 2D OPG and 3D CBCT images. Patients signed an informed consent form to take part in our study. Measurements of the mandible, teeth and dental restorations were taken by two observers on calibrated 2D OPG and 3D CBCT-to-OPG images using measurement functionalities of DOPLHIN software. Acquired dimensions were compared side by side and images of fillings were superimposed. For better visual comparison and more efficient image registration, the methods of spline interpolation were used. The pairs of absolute measurements obtained from conventional OPG and CBCT-to-OPG-converted images were highly correlated (p 
ISSN:1344-6223
1873-4162
DOI:10.1016/j.legalmed.2020.101802