Experiência do operador e tipo de escâner no tempo de escaneamento e geração de arquivos e veracidade dos modelos obtidos em escaneamentos de arco completo

Abstract

The objective of this in vivo study was to evaluate the influence of the operator's experience and the type of scanner on the scanning time and size of the files generated, in addition to the veracity of the total arc models obtained. Volunteers (n=13) were scanned by two operators (low and high experience), using two intraoral scanners (Trios 3, 3Shape; Virtuo Vivo, Straumann), obtaining digital models in .STL and the time of each scan was timed. They were then molded by an experienced operator using elastic material (Hydrogum V, Zhermack) and after obtaining type IV plaster models, these were scanned on a bench scanner (inEos X5, Dentsply Sirona) to obtain the reference model. Three-dimensional analysis of the models was performed using 3D analysis software (Geomagic Control, 3D Systems). Parametric data were analyzed by ANOVA followed by the Tukey HSD test (α=0.05). Pearson correlation was performed between scanning time and file size. For the variable total scanning time and maxillary scanning, there was a significant difference, with Trios 3 having shorter scanning time and the operator with less experience having longer scanning time. Significant differences were observed between the maxilla, mandible and associated files comparing the two operators and the two scanner systems (p<.001), with larger files observed for Trios 3 (p<.001). For veracity analysis between models, no significant difference was found between scanners and operators (p>.001). Operator experience did not affect the size of files resulting from full-arch scans performed in vivo for the maxilla or mandible, however, it did affect scan time. The type of intraoral scanner influenced the files, with Trios 3 producing larger files and Virtuo Vivo presenting greater dispersion among the files obtained. The different experience levels of the operators and the intraoral scanners resulted in full-arch digital models with similar accuracy to each other and when compared to the master models for the maxilla and mandible.