evaluation of the shear bond strength and fluoride release of a new bioactive dental composite material.

Background: The aim of this study was (1) to determine and compare the shear bond strength (SBS) of a bioactive composite "Activa Bioactive Restorative" with and without bonding agent and a nanocomposite "Filtek Z350 XT/Z350" and (2) to measure and compare the amount of fluoride release from a bioactive composite "Activa Bioactive Restorative" and a glass ionomer "Equia forte".

Material And Methods: Forty two dentin surfaces from freshly extracted human molars were prepared for shear bond strength testing. The specimens were randomly divided into three equal groups.