Perceptibility and Acceptability of Surface Gloss Variations in Dentistry

Operative Dentistry
Rafael Santos RochaEduardo Bresciani

Abstract

To assess the visual perception of observers regarding perceptibility and acceptability of surface gloss variations of resin composites and to determine the limit of perceptibility and acceptability of gloss variations. Eight resin composite specimens and one human tooth specimen were fabricated. The resin specimens were polished to reach a surface gloss, in gloss units (GUs), of 10 GU, 20 GU, 30 GU, 40 GU, 50 GU, 60 GU, 70 GU, and 80 GU, and the human tooth specimen had a surface gloss of 80 GU. Sixty observers were selected to compare the surface gloss of the specimens in a light booth. For the perceptibility assessment, specimens were randomly displayed two at a time. Each observer performed a total of 144 observations. Observers answered two specific questions for determining the level and limit of perceptibility of gloss variations. The acceptability limit of gloss was determined by comparing the resin specimens with the tooth specimen. The observations were performed with dental practice scenarios (illuminant conditions, visualization field, and observers' education). Data were submitted to a nonlinear probit model and nonlinear regression estimation probit (5%). Differences in perceptibility and acceptability were observ...Continue Reading

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Jun 15, 2017·International Journal of Dentistry·Rafael Santos RochaEduardo Bresciani

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Citations

Dec 7, 2020·The Journal of Prosthetic Dentistry·Guilherme Schmitt de AndradeEduardo Bresciani

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