Microtensile bond strength of tooth-colored materials to primary tooth dentin

Abstract

Purpose: This study measured the microtensile bond strengths of 2 tooth-colored restorative materials with and without conditioning of primary teeth dentin, and examined the micromorphology of the debonded surfaces and material-dentin interfaces. Methods: Cylindrical specimens of packable composite resin (PCR) and resin-modified glass ionomer cement (RMGIC) bonded to dentin of primary teeth were ground to an hourglass shape and tested for microtensile bond strength. The debonded surfaces and material-dentin interfaces were prepared and examined under a scanning electron microscope (SEM). Results: The microtensile bond strength values (mean±SD, in MPa) of PCR (Filtek P60 with Single Bond) and..