Resin cement diffusion into dentin may differ as a function of the pre-treatment regimen. Since self-adhesive cements do not require substrate pre-treatment for luting, penetration of and interaction with the underlying dentin are questioned. We hypothesized that differences in the resin cement diffusion into dentin may exist among current commercial adhesive cements. Composite cylinders were l...

OBJECTIVES To evaluate the bond strength of dental resin agent to zirconia ceramic after surface pre-treatment with different techniques. METHODS Specimens of hot isostatic pressed yttrium-oxide-partially-stabilized zirconia blocks (ZF) were fabricated (Procera Zircon, Nobel Biocare, Sweden) and compared to glossy dense zirconia blocks (ZG). Four groups of specimens with different surface tre...

The purpose of this study was to compare regional bond strength at middle and cervical thirds of the root canal among glass fiber-reinforced composite (FRC) endodontic posts luted with different cements, using the push-out test. To compare the performance (retention) of two types of luting cements polycarboxylat cement and Glass ionomer cement used to cement translucent fibre post. and To compa...

OBJECTIVES The objectives of this study were (1) to assess the bonding performance of a new auto-adhesive cement (RelyX Unicem, 3M ESPE) to enamel and dentin, using a standard micro-tensile bond strength (microTBS) test set-up, and (2) to evaluate the interaction of this material with dentin by means of high-resolution electron microscopy. METHODS The microTBS of RelyX Unicem with and without...

Aim: The aim of this study was to evaluate the microleakage and retentive strength various luting agents. Material And Method: Forty samples were randomly divided into group A (assessment different agents ) B agents) with 20 each. Both Group ( assessment further subdivided A1, A2, A3 A4 & B1, B2, B3 B4 respectively 5 B1- ZINC PHOSPHATE( CONTROL GROUP )Group B2 - SPEED CEM PLUS A3, HY BOND C...

Objective: The purpose of this study was to evaluate the effect MDP containing resin cement and surface treatment Translucent zirconia Ultra translucent on shear bond strength. Material & Methods: Eighty discs were constructed . Samples divided into two groups: Group I: samples (n=20) Gro up II: Each group will be subdivided 2 subgroups according Subgroup A: treated with air abrasion Sub B: lef...