effect of calcium hydroxide upon the surface properties of dentin

ABSTRACT

The surface scratch of dentin was performed before and after application of calcium hydroxide paste. Scratching was done using a Vicker Hardness tester. Dentin surface was subjected to a load of 300 gm. under a speed of 1 mm/min. Width of scratch was measured using a sterio-micro scope. The effect of water storage of samples on the surface scratch was studied. Calcium hydroxide powder increased the resistance of dentin to scratch up to 10%, the storage time had no effect on increasing the dentin hardness when compared to 15 days storage results: