Reliability and accuracy of automatic segmentation of mandibular 3D models on linear measurements.

Autor: Poleti ML; Federal Institute of Paraná, Rua João XXIII 600, Londrina, Paraná, 86060-370, Brazil. marcelo_poleti@yahoo.com.br., Fernandes TMF; Department of Orthodontics, University of Northern Paraná, Rua Marselha 183, Londrina, Paraná, 86041-140, Brazil., Moretti MR; University of Northern Paraná, Rua Marselha, 183, Londrina, Paraná, 86041-140, Brazil., Puzinato LR; University of Northern Paraná, Rua Marselha, 183, Londrina, Paraná, 86041-140, Brazil., Slaviero TVS; Department of Orthodontics, University of Northern Paraná, Rua Marselha 183, Londrina, Paraná, 86041-140, Brazil., Rubira-Bullen IRF; Department of Stomatology, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Bauru, São Paulo, 17012-901, Brazil.
Jazyk: angličtina
Zdroj: Clinical oral investigations [Clin Oral Investig] 2021 Nov; Vol. 25 (11), pp. 6335-6346. Date of Electronic Publication: 2021 May 05.
DOI: 10.1007/s00784-021-03934-4
Abstrakt: Objective: Evaluate if automatic segmentation of mandibular three-dimensional (3D) models is reliable and accurate.
Materials and Methods: Eight dry mandibles with eight silica markers were scanned in the i-CAT Classic device (Imaging Sciences International). Automatic segmentation was performed using nine standard preset thresholds in the Dolphin software (Dolphin Imaging & Management Solutions). Three observers individually made twice eight linear measurements on the mandibular 3D models. Another observer made physical measurements, twice as well, on the dry mandibles. Reliability and accuracy were evaluated with intraclass correlation coefficients (ICCs), Dahlberg's formula, Bland-Altman analyses, and changing bias with regression analyses.
Results: Inter-observer and intra-observer ICCs and Dahlberg's error were ≥ 0.75 and ≤ 1.0 mm, respectively, for all measurements. Inter-observer agreement between mandibular 3D models and physical measurements ranged from -0.37 to 0.91 mm.
Conclusions: Linear measurements made on mandibular 3D models obtained using standard preset thresholds are reliable and accurate. However, additional studies are necessary to confirm this hypothesis for clinical applications.
Clinical Relevance: Since the 3D models are useful for diagnostics and surgical planning, it is necessary to determinate whether the linear measurements made on 3D models obtained by automatic segmentation are sufficiently reliable and accurate.
(© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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