Effects of hydrogen peroxide on dental permeability

Abstract

Objective: This study evaluated the effect of four bleaching agents on the dental permeability. Material and Methods: Bovine teeth were divided into four groups (n=10), and the initial dental permeability was measured before the bleaching treatments, using a dental hydraulic permeability device. Afterwards, teeth were bleached with whitening products, and the final permeability was recorded. The results were expressed in percentage of increasing permeability (%) and data were submitted to ANOVA and Tukey’s test. Results: Whiteness HP Maxx produced higher dental permeability (145.7±76.3) than Whiteness HP Blue (57.5±36.1) and Pola Office Plus (72.7±19.5), which did not differ from Opalescence Boost PF (101.4±46.3). Conclusion: All bleaching agents increased the dental permeability. The increasing intensity was product-dependent.