Effect of nonvital tooth bleaching on resin/enamel shear bond strength

Erica Cappelletto Nogueira Teixeira; Anderson Takeo Hara; Cecilia Pedroso Turssi; Mônica Campos Serra

doi:10.3290/j.jad.a8129

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Effect of nonvital tooth bleaching on resin/enamel shear bond strength

Journal article

Peer reviewed

Effect of nonvital tooth bleaching on resin/enamel shear bond strength

Erica Cappelletto Nogueira Teixeira, Anderson Takeo Hara, Cecilia Pedroso Turssi and Mônica Campos Serra

The journal of adhesive dentistry, Vol.4(4), pp.317-322

2002

DOI: 10.3290/j.jad.a8129

PMID: 12666751

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Abstract

This study evaluated the effect of nonvital tooth bleaching on shear bond strength (SBS) of the composite resin/bovine enamel interface at different periods of time after bleaching. Three hundred twenty teeth were randomly divided into four groups according to bleaching agent: SPH: sodium perborate and 30% hydrogen peroxide; SPW: sodium perborate and distilled water; CP: 37% carbamide peroxide; and PLA: distilled water (placebo). The bleaching agents in the pulp chambers were replaced every 7 days for 4 weeks. For SBS testing, each of these groups was randomly divided into four subgroups (n = 20) according to the postbleaching periods of time: 0 (baseline), 7, 14, and 21 days. At the respective time, enamel slabs were embedded in polyester resin and flattened. Composite resin cylinders (Z100/Single bond, 3M) were bonded to the enamel surface and subjected to the SBS test using a universal testing machine. The ANOVA and Tukey's test (alpha = 0.05) showed statistically significant differences (expressed by different letters) among the bleaching agents only at follows: PLA (a), CP (ab), SPW (ab), and SPH (b). The SPH group, showing the lowest mean value, differed significantly from the control group. At 7, 14, and 21 days, no significant differences were observed. Nonvital tooth bleaching affected the resin/enamel SBS values when sodium perborate mixed with 30% hydrogen peroxide was used.

Materials Testing

Composite Resins

Shear Strength

Hydrogen Peroxide

Carbamide Peroxide

Dental Restoration Failure

Tooth Bleaching

Animals

Analysis of Variance

Dental Enamel

Oxidants

Time Factors

Cattle

Urea - analogs & derivatives

Dental Stress Analysis

Statistics, Nonparametric

Tooth, Nonvital

Dental Bonding

Peroxides

Drug Combinations

Borates

Details

Title: Subtitle: Effect of nonvital tooth bleaching on resin/enamel shear bond strength
Creators: Erica Cappelletto Nogueira Teixeira - Department of Restorative Dentistry, Piracicaba School of Dentistry, State University of Campinas, São Paulo, Brazil
Anderson Takeo Hara
Cecilia Pedroso Turssi
Mônica Campos Serra
Resource Type: Journal article
Publication Details: The journal of adhesive dentistry, Vol.4(4), pp.317-322
Publisher: Germany
DOI: 10.3290/j.jad.a8129
PMID: 12666751
ISSN: 1461-5185
Language: English
Date published: 2002
Academic Unit: Operative Dentistry
Record Identifier: 9984066078502771

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