European Journal of Prosthodontics and Restorative Dentistry

Influence of Luminosity on the Precision and Accuracy of Intraoral Scanning: A Comparative in vitro Study

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Cover Date

September 2024

Print ISSN

0965-7452

Electronic ISSN

2396-8893

Vol

32

Issue

3

Abstract

Objectives: This in vitro study focused on verifying the influence of different ambient light conditions on the accuracy and precision of models obtained from digital scans. Methodology: To measure the tested illuminances: chair light/reflector; room light, and natural light at the time of scanning, a luxmeter was used. From the STL file, nine experimental groups were formed. Results: Of the nine specific combinations between the three IOS and the three types of lighting, it was verified that for all of them, as well as the ICC, the accuracy was also excellent, in which the measured values were not significantly influenced by the
IOS brand (p = 0.994) nor by the type of lighting (p = 0.996). For precision data, GLM indicated a statistically significant interaction between IOS and lighting type. Under LS, accuracy was significantly higher with 3Shape® than with CS 3600 CareStream®, which had significantly higher accuracy than Virtuo Vivo™ Straumann®. Conclusions: The models obtained with the three IOS evaluated exhibited excellent accuracy under the different illuminance tested and the 3Shape® under the three illuminance conditions was the device that presented the best precision, specifically when using LC and LS.

Keywords
Digital Technology
Computational Models
Digital Processing