Effect of Bonding and Rebonding on the Shear Bond Strength of Two-Piece Implant Restorations.

Purpose: To evaluate the rebonding strength of ceramics to titanium alloy after disassembling by heat treatment.

Materials And Methods: A total of 40 titanium alloy (titanium-6 aluminum-4 vanadium) disks (4.0 × 6.

Assessment of reliability of CAD-CAM tooth-colored implant custom abutments.

Statement Of Problem: Information is lacking about the fatigue resistance of computer-aided design and computer-aided manufacturing (CAD-CAM) tooth-colored implant custom abutment materials.

Purpose: The purpose of this in vitro study was to investigate the reliability of different types of CAD-CAM tooth-colored implant custom abutments.

Material And Methods: Zirconia (Lava Plus), lithium disilicate (IPS e.

Kinetic release of hydrogen peroxide from different whitening products.

The objective of this in vitro study was to evaluate the kinetics of hydrogen peroxide (HP) release from five different bleaching products: VivaStyle® 10% fitted tray gel, VivaStyle® 30% in-office bleaching gel, VivaStyle® Paint-On Plus paint-on bleaching varnish, Opalescence PF® 10% carbamide peroxide gel and Trèswhite Supreme™ 10% HP gel. Each product was firstly titrated for its HP content by a described method. HP release kinetics was assessed by a modified spectrophotometric technique.