Exploring the influence of tooth, ceramic, and resin luting agent variations on laminate veneer optical characteristics: a prospective clinical investigation.

Objective: This study evaluated the influence of tooth shade, resin-based luting agent shade values, and ceramic thickness on the optical properties of CLVs.

Materials And Methods: The study involved 16 participants who received 95 CLVs. CIE L*, a*, b* color coordinates were assessed with a clinical spectrophotometer.

Influence of composite type and light irradiance on color stability after immersion in different beverages.

Objective: The aim of this study was to evaluate the color stability of two resin-based composites photo-activated by two light curing units (LCU) with different irradiances.

Materials And Methods: Hundred disc-shaped specimens (2-mm thick) of a nanofilled (FZ- Filtek Z350 XT, 3M ESPE) and a microhybrid (ED-Empress Direct, Ivoclar Vivadent) composites were photo-activated with two LCU: Valo Cordless, Ultradent (VA-1800 mW/cm ) or Radii-cal, SDI (RA-900 mW/cm ). Samples (n = 5) were immersed during 12 days in distilled water (WT), orange juice (OJ), red wine (RW), coffee (CF), or Brazilian tea (BT).