Root apex sealing with different filling materials photopolymerized with argon ion laser light

摘要

The present study evaluates the seal quality in the apex delta of uniradicular teeth filled with light-curing materials (Ultrablend Calcium-hydroxide, Vitremer glass ionomer and Flow-Fill Magic composite). 45 roots prepared by the endo PTC/Dakin technique were used. All samples were impermeabilized with ethyl-cyanoacrylate and light-cured with 488 nm argon laser light. A 200 urn optical fiber introduced into the root canal delivered 100 mW of light power to the light-curing material. The fiber tip was positioned 5 mm away from the apex. Light was applied by 20 seconds. After curing, the samples were immersed in a methylene-blue dye solution for 24 hours. Then, the samples were cut longitudinally and were analyzed under a stereoscopic microscope for dye infiltration. It was found that those samples sealed with Ultrablend Calcium-hydroxide or the glass ionomer presented the best results, as compared to those samples sealed with the Flow-Fill Magic composite.