Influence of the ambient color lighting on the accuracy of complete arch implant scans recorded by using two intraoral scanners

Gastón Ochoa-López; Marta Revilla-León; Miguel Gómez-Polo

doi:10.1016/j.prosdent.2024.03.030

Influence of the ambient color lighting on the accuracy of complete arch implant scans recorded by using two intraoral scanners

J Prosthet Dent. 2024 Apr 22:S0022-3913(24)00224-5. doi: 10.1016/j.prosdent.2024.03.030. Online ahead of print.

Authors

Gastón Ochoa-López¹, Marta Revilla-León², Miguel Gómez-Polo³

Affiliations

¹ PhD Candidate, Department of Prosthodontics and Restorative Dentistry, School of Dentistry, Complutense University of Madrid (UCM), Madrid, Spain.
² Affiliate Assistant Professor, Graduate Prosthodontics, Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, Wash.; Director, Research and Digital Dentistry, Kois Center, Seattle, Wash.; and Researcher, Revilla Research Center, Madrid, Spain.
³ Associate Professor, Department of Conservative Dentistry and Prosthodontics, School of Dentistry, Complutense University of Madrid (UCM), Madrid, Spain; and Director, Postgraduate Program (Specialist in Advanced Implant-Prosthesis), Complutense University of Madrid (UCM), Madrid, Spain. Electronic address: [email protected].

PMID: 38653690
DOI: 10.1016/j.prosdent.2024.03.030

Abstract

Statement of problem: The influence of different ambient factors including lighting has been previously studied. However, the influence of ambient color lighting settings on intraoral scanning accuracy remains uncertain.

Purpose: The purpose of this in vitro study was to assess the influence of ambient color lighting on the accuracy of complete arch implant scans recorded by using 2 intraoral scanners (IOSs).

Material and methods: An edentulous maxillary cast with 6 implant scan bodies was digitized by using a laboratory scanner (DW-7-140) to obtain a reference file. Two groups were created based on the IOS tested: TRIOS 4 (IOS-1) and i700 (IOS-2). Seven subgroups were developed depending on the ambient color lighting (red, green, blue, yellow, cyan, magenta, and white) (n=15). Scanning accuracy was analyzed by using a metrology software program (Geomagic Control X). The Kruskal-Wallis, 1-way ANOVA, and pairwise comparisons were used to analyze the data (α=.05).

Results: Significant trueness and precision values were found across the groups (P<.05) and subgroups (P<.05). For IOS-1, blue ambient lighting obtained the best trueness (19.8 ±1.8 µm) (P<.05); in precision, white light (20.8 ±7.3 µm) and blue light (22.1 ±13.5) showed the best results (P<.05). For IOS-2, white light showed the best trueness (51.9 ±16.7 µm); the best precision was obtained under magenta (38.6 ±10.4 µm) and yellow light (52.6 ±24.0 µm) (P<.05).

Conclusions: The optimal ambient color lighting varied between the IOSs assessed. As the best condition for maximizing accuracy was not found, ambient color lighting must be individualized for the IOS system used.