Evaluation of early and late color change in light-curing resin cement

Abstract

This article aims to assess whether the color of the Minikit Allceem Venner APS™ and Variolink Veneer II™ light-curing resin cements differs from the color of their respective try-in after immediate reading, and whether they differ from themselves after 30 and 90 days of activation. Ten disc-shaped specimens of each color of the cements were made. Color measurements were performed using a VITA Easyshade Compact™ clinical spectrophotometer. The bodies were submitted to color reading immediately after their preparation and compared to the data obtained in the readings of their respective try-ins and then stored in distilled water at 37ºC. New readings were performed after 30 days and 90 days of the first immediate reading, the data were analyzed by analysis of variance and significant difference by the test. The resin cements showed color changes, in relation to their respective try-in, in the immediate color reading and after 30 days. Only the OW colored Allceem Veneer APS™ Minikit cement showed non-significant results in all evaluation parameters. The try-ins were not shown to be reliable in simulating the color of the resin cement and the resin cements showed a considerable color variation over the analyzed time.