Evaluation of two stereophotogrametry software for 3D reconstruction of virtual facial models.

Autor:	Chaves LB; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil).; Universidade Federal Fluminense, Departamento de Ortodontia (Niterói/RJ, Brazil)., Barbosa TL; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil)., Casagrande CPM; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil)., Alencar DS; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil).; Universidade Federal Fluminense, Departamento de Ortodontia (Niterói/RJ, Brazil)., Capelli J Jr; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil)., Carvalho FAR; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil).
Jazyk:	angličtina
Zdroj:	Dental press journal of orthodontics [Dental Press J Orthod] 2022 Jul 04; Vol. 27 (3), pp. e2220230. Date of Electronic Publication: 2022 Jul 04 (Print Publication: 2022).
DOI:	10.1590/2177-6709.27.3.e2220230.oar
Abstrakt:	Objective: The present study aimed to evaluate the accuracy of 3D facial soft tissue virtual models produced by two photogrammetry softwares (AgiSoft Photoscan and 3DF Zephyr Free), when compared to those created by cone beam computed tomography (CBCT). Methods: Ten patients were submitted to two sequences of photographs performed with a DSLR camera (with and without the aid of a ring flash) and CBCT scans. Each photo series for each patient was processed with the softwares, and at the end, five models of each patient were generated: 1) CBCT, 2) AAL (Agisoft Ambient Light), 3) AFL (Agisoft Flash Light), 4) ZAL (Zephyr Ambient Light), and 5) ZFL (Zephyr Flash Light). Color coded maps and root-mean-square (RMS) distances were used to compare the photogrammetry models to the CBCT ones. Results: One sample t-test showed significant differences between all methods versus CBCT. The worst results were seen in the ZAL group (discrepancies up to 5.17mm), while the best results were produced by AAL group (discrepancies up to 2.11mm). Conclusions: It can be concluded that this type of virtual facial models are reasonably accurate, although not perfect, and considering its lower biological and financial cost, they may play an important role in specific situations.
Databáze:	MEDLINE
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