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Shade‐Matching Performance Using a New Light‐Correcting Device
Author(s) -
Gasparik Cristina,
Grecu Alexandru Graţian,
Culic Bogdan,
Badea Mîndra Eugenia,
Dudea Diana
Publication year - 2015
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/jerd.12150
Subject(s) - daylight , color difference , mathematics , matching (statistics) , significant difference , statistics , filter (signal processing) , computer science , computer vision , optics , physics
Purpose To evaluate the shade‐matching performance of dental students when using a new light‐correcting device with polarization filter. Materials and Methods A total of 21 observers assessed the shade of the upper frontal teeth in one patient under three lighting conditions: daylight ( A ), daylight and a light‐correcting device ( S mile L ite, S witzerland) ( B ), daylight and a light‐correcting device with a polarization filter attached ( C ) by using two shade guides: VITA C lassical and 3D M aster. Matching scores were calculated as a sum of the color differences between the reference shades and the selected shades ( ΔE ab * ). Data were analyzed using analysis of variance ( ANOVA ) test (α = 0.05). Results A significant difference was found between the shade‐matching scores under the three lighting conditions ( p < 0.001). However, pairwise comparisons showed that between A ( ΔE ab *A = 1,873.6) and C ( ΔE ab *C = 2,019.1), there was no significant difference ( p > 0.05). The best matching scores were calculated for B ( ΔE ab *B = 1,652.5). Significant differences were found in respect to the observer's gender ( p < 0.05) and color competency ( p < 0.05), as well as with the shade guide used ( p < 0.05). Conclusions Dental students' shade‐matching ability was better when the light‐correcting device was used, but the addition of the filter to it did not prove beneficial. The shade guides used, the observer's gender, and color competency influenced the shade matching. Clinical Significance The light‐correcting device influenced the shade‐matching performance; however, the attached polarization filter did not improve the results of the shade matching.