Progress towards blue emitting MgO-ZnO-GaO nanocomposites synthesized by bio mediated route.

MgO-ZnO-GaO nanocomposites are synthesized by solution combustion method using Aloe Vera gel as a reducing agent to increase the efficiency of blue emission. The appearance of Bragg reflections corresponding to MgO, ZnO and GaO clearly indicates the formation of nanocomposites. The surface morphology consists irregular shape and sized NPs.

Effect of saliva and blood contamination on the bond strength of self-etching adhesive system- An in vitro study.

Aim: The aims of this study were to determine the effect of saliva and blood contamination on the shear bond strength of self-etching adhesive to enamel and dentin; and, to compare the difference in bond strength due to contamination beforeand after application of the self-etch adhesive.

Materials And Methods: 40 human mandibular molars were wet ground on both buccal and lingual surfaces to prepare flat superficial enamel and dentin surfaces. They were randomly divided into two groups (n = 40) based on the substrate (enamel and dentin).