The Effect of Hydrogen Peroxide Concentration on the Outcome of Tooth Whitening: an in Vitro Study

Overview

Journal J Dent

Publisher Elsevier

Specialty Dentistry

Date 2004 Apr 1

PMID 15053912

Citations 31

Authors

M Sulieman

M Addy

E Macdonald

J S Rees

Affiliations

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Abstract

Aim: This in vitro study examined the effect that various concentration of hydrogen peroxide (5-35%) had on tooth whitening.

Method: Extracted third molars were sectioned and stained using a standardised tea solution to Vita shade C4. These stained specimens were then bleached with a series of gels containing 5, 10, 15 or 25% w/w hydrogen peroxide. Each specimen was bleached for a number of sessions with one session being defined as 3 x 10 min exposure.

Results: The number of applications of the various concentrations of bleaching gel varied from 12 applications for the 5% gel to one application for the 35% gel. Plotting the number of applications against hydrogen peroxide concentration showed an exponential response curve.

Conclusions: The concentration of hydrogen peroxide in a proprietary bleaching gel had a marked effect on the number of applications required to produce an optimal shade outcome.

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Effect of Staining and External Bleaching on the Color Stability and Surface Roughness of Universal-Shade Resin-Based Composite.

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