Effect of Various Etching Techniques on Shear Strength of Newer Generation Composites.

Aim: To evaluate the effect of lasers on the shear bond strength of Giomer and G-aenial flo composite using three different etching techniques.

Materials And Methods: 60 Samples (extracted human premolar teeth) are cut horizontally using a diamond disk to expose a flat occlusal surface involving enamel and dentin. On exposed occlusal surfaces, etching is done by various methods.

Relationship between the Depth of Penetration and Fracture Resistance of Various Sealers: A Comparative Study.

Aim: The aim of this study was to estimate the penetration depth and fracture resistance of three different sealers and to verify the relationship between the penetration depth and fracture resistance.

Materials And Methods: Sixty single-rooted teeth were selected and root canal preparation was done. After the instrumentation, the teeth were divided into three groups of 20 each.