Effect of surface treatment on the bond strength between yttria partially stabilized zirconia ceramics and resin cement.

Statement Of Problem: No consensus has been reached on the best bonding protocol between a zirconia ceramic surface and the tooth structure.

Purpose: The purpose of this study was to evaluate the extrusion shear strength between yttria partially stabilized zirconia ceramics and resin cement (Panavia F) after different surface treatments.

Material And Methods: The surface treatments evaluated (n=7) included the following: G1-control group (no surface treatment); G2-treated with MDP primer (Alloy Primer); G3-treated with 40% hydrofluoric acid (210 seconds); and G4-treated with 40% hydrofluoric acid (210 seconds) followed by MDP primer.

Photoelastic stress analysis of different designs of cement-retained fixed partial dentures on Morse taper oral implants.

There is no consensus in literature regarding the best plan for prosthetic rehabilitation with partial multiple adjacent implants to minimize stress generated in the bone-implant interface. The aim of this study was to evaluate the biomechanical behavior of cemented fixed partial dentures, splinted and nonsplinted, on Morse taper implants and with different types of coating material (ceramic and resin), using photoelastic stress analysis. A photoelastic model of an interposed edentulous space, missing a second premolar and a first molar, and rehabilitated with 4 different types of cemented crowns and supported by 2 adjacent implants was used.

Tensile bond strength of cast commercially pure titanium dowel and cores cemented with three luting agents.

Purpose: The purpose of this study was to compare the tensile strength of commercially pure titanium dowels and cores cemented with zinc phosphate or resin cements.

Methods: Twenty-one extracted human canines were endodontically treated. The root preparations were accomplished using Largo reamers (10mm in depth and 1.

Tensile bond strength of cast commercially pure titanium and cast gold-alloy posts and cores cemented with two luting agents.

Statement Of Problem: In vitro studies on the retentive strengths of various cements used to retain posts have reported conflicting results.

Purpose: The purpose of this study was to compare the tensile strength of commercially pure titanium and type III cast gold-alloy posts and cores cemented with zinc phosphate or resin cement.

Material And Methods: Forty-two extracted human canines were endodontically treated.