Consistency of Value Detection for Shade Matching Using Multiple Scanners
Document Type
Poster
Abstract
Objective: Digital shade-matching systems allow for the selection of value, hue, chroma accurately to match the shade of the surrounding natural teeth. Significant variation exists during shade selection using different digital scanners.
Purpose: The purpose of this study was to examine the trueness and repeatability of shade value using multiple digital systems as compared to spectrophotometer (SPM) as a gold standard.
Methods: VITA Toothguide 3D-MASTER® tabs were scanned for their Value only (1M1, 2M1, 3m1, 4M1and 5M1) five times using a spectrophotometer and three different scanning systems: Trios3 Shape Scanner, Vita Easy Shade V and Prime Scan. Next, we conducted tests on human subjects by scanning sound teeth #8 or #9. Value was collected from the middle third of each tooth. Reliability analysis was performed to compare the consistency of detected values with each scanner against values detected with SPM by weighted Kappa values.
Results: None of the scanned values were the same as values detected with SPM. The measurements obtained from the Vita Easyshade demonstrated a strong agreement with a Kappa value of 1, followed by the Prima Scan, which showed a Kappa value of 0.763. In contrast, the Kappa values for the human subjects were all below 0.3.
Conclusion: Different scanners produced variable results as compared to spectrophotometer which may impact patient satisfaction with the appearance of a final restoration.
Publication Date
2-2025
Recommended Citation
Betancur, Laura and El-Gendy, Tamer, "Consistency of Value Detection for Shade Matching Using Multiple Scanners" (2025). ASDOH Student Publications. 3.
https://scholarworks.atsu.edu/asdoh-student/3
Comments
Poster presented at ASDOH Research Week - March 2025.
This is a Cubify based presentation hosted at https://my.ltb.io/#/showcase/atsu-asdoh. It includes a video presentation, references, a PowerPoint presentation, and summary poster.