Grander system: a new technology to reduce surface tension of adhesive systems in dentistry.

Background: Reduced surface tension of liquids results in higher surface wetting ability and diffusivity by the substrate.

Objectives: The objective of this study was to evaluate the influence of the Grander Technology in reducing the surface tension of adhesive systems.

Methods: Two adhesive systems (self-etch and total-etch) were modified by physical contact with the Grander system Flexible unit to revitalize water, for 48 h.

Dentin bond strength: influence of Er:YAG and Nd:YAG lasers.

The aim of this study was to investigate the effects of Er:YAG and Nd:YAG lasers on the shear bond strength of composite resin to dentin. The coronal portion of 56 human molars was divided into three parts, and the dentin thickness was standardized at 2 mm. A 3-mm hole was marked in the center of each tooth with sealing tape paper.