ADDITIONAL CURING TECHNIQUES IN EVALUATING MICROHARDNESS IN A COMPOSITE RESIN OF NANOPARTICLES

Abstract

Objective. To compare the microhardness in a composite resin of nanoparticles with complementary techniques of light curing r; based on the principle of wave length and intensity of light that need materials for their conversion. Material and methods. Experimental study. 90 blocks of a composite resin of nanoparticles whose dimensions were 10mm of diameter and 2mm of thick were manufactured, those blocks were separated into three groups according to the type of light exposure : technique of Low Light (Soft star), technique of flashing light (Blinking light),technique of intense light (strong light), then the samples were taken to an indenter of last generation Zwick / ROLL Indentec ZHV with an increase (eye) of 20X to see better the footprint where a load of 500 g on the surface (indentation) was applied in order to determine the microhardness.Results. The results showed according to the ANOVA analysis showed a statistically significant difference between groups (p = 0,00 <0,05);