Estudio de la variación de la permeabilidad de la dentina radicular usando isótopos 99mTc, después de la aplicación de láser de alta intensidad

Abstract

Objective: The objective of this study was to evaluate changes in root dentin permeability of human teeth after chemical-surgical preparation, and laser irradiation with Er: YAG, Nd: YAG, through the use of the radioisotope technetium-99m ( 99mTc) free. São Paulo. Brasil. Materials and methods: thirty Channels palatal roots of human maxillary first premolars were prepared and divided randomly into three experimental groups: G1 (control), G2 (laser irradiation with Er: YAG) and G3 (Nd laser irradiation: YAG). in the samples were deposited 99mTc free inside the root canal, enough to fill and placed in test tubes containing 1 ml of saline. After 1 hour, the account of the radioactive isotope ( 99mTc) was performed. Results: After statistical analysis (ANOVA) found that the best results in terms of decreased permeability were found in Group 3, followed by Group 2 and Group 1. Conclusion: We conclude that irradiation with Nd: YAG caused a significant decrease in the permeability of root canal dentin. Laser Er: YAG and control in relation to the dentin permeability of root canal walls showed no statistically significant differences at 5%.