Perceptibility and Acceptability of Surface Gloss Variations in Dentistry

• DOI: 10.2341/18-184-c
• Publication Date: 2019-08-02T19:19:22Z
• Authors: RS Rocha; TC Fagundes; TMF Caneppele; E Bresciani
• Keywords: Gloss (optics)

To assess the visual perception of observers regarding perceptibility and acceptability surface gloss variations resin composites to determine limit variations.Eight composite specimens one human tooth specimen were fabricated. The polished reach a gloss, in units (GUs), 10 GU, 20 30 40 50 60 70 80 had GU. Sixty selected compare light booth. For assessment, randomly displayed two at time. Each observer performed total 144 observations. Observers answered specific questions for determining level variations. was determined by comparing with specimen. observations dental practice scenarios (illuminant conditions, visualization field, observers' education). Data submitted nonlinear probit model regression estimation (5%).Differences observed (ΔGU) (p<0.001). Perceptibility increased ΔGU (10<20<30<40<50=60=70), while decreased (0=10>20>30>40>50>60=70). Acceptability limits 6.4 GU 35.7 respectively.Perceptibility are influenced A variation required 50% notice Concerning acceptability, consider differences not acceptable.