Influence of ambient light condition on the accuracy of different technologies of intraoral scanning: a clinical study

• Grant number: 23/10471-2
• Support Opportunities: Regular Research Grants
• Start date: May 01, 2024
• End date: April 30, 2026
• Field of knowledge: Health Sciences - Dentistry - Dental Radiology
• Principal Investigator: Camila Tirapelli
• Grantee: Camila Tirapelli
• Host Institution: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
• Associated researchers: Bruna Neves de Freitas ; Ruben Johan Christiaan Pauwels

Abstract

Background: Intraoral scanning (IOS) devices can create digital impression data of the oral cavity and are gaining interest in many areas of dentistry. Nevertheless, there are challenges in adopting it broadly, especially because of limited evidence regarding its accuracy. Recent scientific reports showed that ambient light conditions can interfere with the accuracy of intraoral scanning. Considering the different technologies used for digitizing surfaces by the IOS available and the ambient light conditions possible, studying such interaction can help in the better use and adoption of IOS. In addition, the use of different software programs for performing analyses on IOS data, and their potential influence on the accuracy of dimensional measurements, warrants further investigation. Aim: this research project is to evaluate clinically the accuracy of different technologies of IOS depending on the ambient light conditions, patient oral conditions and, different software programs employed in the mesh analysis. Methods: patients with different oral conditions (upper jaw fully dentate, upper jaw with anterior edentulism (Kennedy class IV) and lower jaw with anterior edentulism (Kennedy class IV)) will be digitized (n=10 for each patient / IOS) with four different devices (Cerec Omnicam, Primescan, Medit i700, Eagle IOS) under four different clinical ambient lighting conditions (0, 500, 1 000, 10 000 lux), totaling 480 STL (standard tessellation language) files. A reference patient's dental arch cast will be built from a conventional impression and a reference STL file will be provided through extraoral scanning. STL files will be dimensionally analyzed in comparison with the reference cast using three mesh inspection software programs (Geomagic Control X, MeshLab and Medit Design). The accuracy values from each program will be statistically compared with one-way and three-way ANOVA considering comparisons between light conditions, IOS device, oral conditions and software used. The results obtained will allow us to understand the influence of the ambient light condition on the performance of each of the IOS considered in this study. It will also be possible to observe whether different three-dimensional mesh inspection programs deliver the same result. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE FREITAS, BRUNA NEVES; CAPEL, CAMILA PORTO; VIEIRA, MARCELA AMANDA; BARBIN, GABRIEL FUGITA; CARDOSO, LEANDRO; TIRAPELLI, CAMILA. Do intraoral scanning technologies affect the trueness of dental arches with crowding, diastema, and edentulous spaces? A clinical perspective. Journal of Dentistry, v. 149, p. 8-pg., 2024-08-08. (23/04299-2, 22/16501-8, 23/10471-2)