Implant digital impression accuracy using extraoral scanners: a three-dimensional analysis

• Main Author: Gomes, Grazielle Franco
• Publication Date: 2023
• Other Authors: Tinajero Aroni, Mónica Estefanía, Oliveira, Lucas Portela, Arioli Filho, João Neudenir, Binda, Carolina Mollo, Mollo Júnior, Francisco de Assis
• Format: Article
• Language: eng
• Source: Brazilian journal of oral sciences (Online)
• Download full: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668354
• topic: Dental impression technique; Dental implants; Dental prosthesis; Dental prosthesis, implant-supported

Aim: To analyze the accuracy of extraoral systems (Ceramill Map400+, AutoScan-DS200+, and E2) in full implantprosthetic rehabilitation three-dimensionally. Methods: A metallic edentulous maxilla with four implants was digitalized by a contact scanner (MDX-40 - Roland, control) and used as a control image to compare with other images generated by three laboratory scanners (10 samples per group). Letters identified all the four components: A and D angled 45º, and B and C parallel. The BioCAD software exported the images (.STL) to compare and verify deviations of the analogs on the X, Y, and Z axes. The nonparametric Kruskal-Wallis test and the two-way ANOVA on ranks with a post hoc Tukey test analyzed the data with 5% significance. Results: No statistical differences were observed in the accuracy between the extraoral scanners (p=0.0806). However, when analyzing only the components, component D was more accurate when scanned with Ceramill Map400+ compared with AutoScan DS200+ (p<0.001) and with E2 (p=0.002). Conclusions: All extraoral systems assessed showed digitalization accuracy but with more deviations in angled implants. The Ceramill Map400+ scanner showed the best results for the digital impression of a complete arch.