The influence of a novel in-office tooth whitening procedure using an Er,Cr:YSGG laser on enamel surface morphology

摘要: Background and Objective The purpose of this in vitro study was to evaluate the influence a novel in-office tooth whitening procedure using Er,Cr:YSGG laser radiation on bovine enamel. Study Design/Materials Methods Forty-eight enamel specimens were prepared from canines divided into four groups: Group 1 (control) received no treatment; 2 treatment with an at-home agent (22% carbamide peroxide) for 7 days; 3 (35% H2O2); 4 same therapy order accelerate procedure. The stored 10 days after artificial saliva. Vickers hardness determined microhardness tester surface roughness evaluated VSI microscope. Three each experimental group examined under SEM mineral composition EDS. Data statistically analyzed one-way ANOVA, Tukey's post-hoc test, Wilcoxon signed rank Kruskal-Wallis tests (a = 0.05). Results The reduced treatments (P  0.05). Moreover, not significantly changed whitening. EDS analysis did show alterations composition, while observations indicated changes morphology, especially (P< 0.05). Conclusions The laser-assisted affect compared conventional technique. Lasers Surg. Med. 47:503–511, 2015. © 2015 Wiley Periodicals, Inc.