The purpose of this study was to investigate the influence of the color of positioning guides on the CIEL*a*b* color coordinates of ceramic, resin composite and bovine tooth surfaces measured by a clinical spectrophotometer. Positioning guides (n=10) in different colors (translucent, purple, yellow, green and, blue) were made for each surface (ceramic, resin composite and bovine tooth). The CIEL*a*b* color coordinates were measured with the positioning guides and with no positioning guide (control group).
View Article and Find Full Text PDFBackground: Various techniques, products, and protocols are used for the bleaching of non-vital teeth. The walking bleach technique involves sealing the bleaching agent in the pulp chamber. In the inside/outside technique, a low-concentration bleaching agent is applied at home using a custom tray.
View Article and Find Full Text PDFStatement Of Problem: In-office bleaching has been widely researched. However, few studies have evaluated alternative protocols for this procedure. Moreover, information on the long-term stability of in-office whitening is limited.
View Article and Find Full Text PDFStatement Of Problem: Layered composite resins may adequately mask discolored substrates. However, whether color changes that occur over time affect masking ability is unclear.
Purpose: The purpose of this in vitro study was to investigate the effect of layering and water aging on the masking ability of 2 composite resins.
Objective: To map the existing evidence regarding the masking ability of resin composites.
Overview: The literature search was conducted electronically, based on the PRISMA Extension for Scoping Reviews-online protocol at https://osf.io/m2h67/ with no language or time restrictions.