Shade-Matching Performance Using a New Light-Correcting Device

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 (Smile Lite, Switzerland) (B), daylight and a light‐correcting device with a polarization filter attached (C) by using two shade guides: VITA Classical and 3D Master. Matching scores were calculated as a sum of the color differences between the reference shades and the selected shades (ΔEab*). 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 0.05). The best matching scores were calculated for B (ΔEab*B = 1,652.5). Significant differences were found in respect to the observer's gender (p