Dentistry Commons^™

Evaluation Of The Effect Of Two Polishing Techniques And Thermocycling Process On Surface Roughness, Hardness, And Color Stability Of Composites, Muhammet Fidan, Zeynep Dereli

Journal of Dentistry Indonesia

Objectives: The aim of this study was to evaluate the effect of two polishing techniques and 10.000 thermocycles on the color stability, surface roughness, and hardness of two nanohybrid (Tetric N-Ceram, Escom100) and one bulkfill (Filtek) resin composites. Methods: A total of 60 specimens were prepared using three resin composites and 20 discs from each composite. Specimens for each composite were randomly divided into two different polishing groups (Optrapol rubber and Sof-Lex discs) (n=10). Surface roughness (Ra, μm), microhardness (VHN), and color change (ΔE00) values were measured pre- and post-thermocycling. Two-way analysis of variance (ANOVA) was used to evaluate …

Effect Of Thickness On Translucency And Masking Ability Of A Recently Developed Single-Shade Resin Composite With Enhanced Opacity: An In Vitro Comparative Study, Sayed Mohamed Ghorab, Hagag Abd Elkader Atya

Future Dental Journal

ABSTRACT

Objective: This study aimed to evaluate the effects of thickness changes on translucency and masking ability of a recently developed single shade resin composite material with enhanced opacity comparing it with a traditional opaque-shade one.

Material and methods: Two brands of composite resins; Omnichroma blocker (OCB) and G-aenial Anterior (GA) in opaque A2 (OA2) shade were selected to enroll the study. Color coordinates of each composite were determined at 0.5, 1, and 1.5 mm thicknesses (n=10/thickness) on four different backgrounds (white baking, black baking, C4 shade porcelain baking and the backing of material itself) by using a …