The Effect of the Teeth Bleaching with 35% Hydrogen Peroxide on the Tensile Bond Strength of Metal Brackets

Overview

Journal Sci Rep

Specialty Science

Date 2017 Apr 13

PMID 28400596

Citations 4

Authors

Giedre Trakiniene

Simona Daukontiene

Vytautas Jurenas

Vilma Svalkauskiene

Dalia Smailiene

Kristina Lopatiene

Tomas Trakinis

Affiliations

Soon will be listed here.

Abstract

The objective of this study was to determine the effects of teeth bleaching on the tensile bond strength of metal brackets bonded with light-curing adhesive system to the human enamel. 40 recently extracted human permanent molars were used for the study. The mesial buccal surface of each tooth was used as a control group and the distal buccal surface was used as an experimental group. Control group surfaces were not submitted to bleaching, while experimental group surfaces were bleached with in-office bleaching material containing 35% hydrogen peroxide. 30 days after the bleaching, identical premolar metal brackets were bonded to each surface using light-curing adhesive. Both groups were submitted to a tension test, using a universal machine. The tensile bond strength of brackets bonded to the bleached enamel was 15% lower than that of brackets bonded to the unbleached enamel. After debonding, more adhesive was left on the bracket base in experimental group than in the control group. The conclusion of this study was that bleaching with an in-office bleaching material containing 35% hydrogen peroxide reduced the tensile bond strength of orthodontic bracket adhesive to the enamel surface.

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