Influence of antioxidants on stress of bonding agents in recently whitened teeth

Influence of antioxidants on stress of bonding agents in recently whitened teeth

The aim of this study was to evaluate the influence of time of application of antioxidant agents on the bond strength to bovine enamel after bleaching by light emitting diode. Twenty two bovine incisors were used, on which the vestibular surfaces were flattened and divided into four experimental gro...

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Bibliographic Details
Published in:Acta odontológica latinoamericana Vol. 24; no. 3; pp. 252 - 257
Main Authors: Braz, Rodivan, Patrício, Carlos E, Ribeiro, Ana I A M, Guênes, Gymenna M T, Dantas, Darlene C R E, Montes, Marcos A J R, Feitosa, Diala A S
Format: Journal Article
Language:English
Published: Argentina Sociedad Argentina de Investigación Odontológica 2011
Subjects:
Animals
Antioxidants - pharmacology
Cattle
Dental Bonding
Dental Stress Analysis
Dentistry
DENTISTRY, ORAL SURGERY & MEDICINE
Tooth Bleaching
Antioxidants
Resistência Adesiva
Adesividade
Adhesiveness
Bond strength
Clareamento Dental
Dental Bleaching
Antioxidantes
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Summary:The aim of this study was to evaluate the influence of time of application of antioxidant agents on the bond strength to bovine enamel after bleaching by light emitting diode. Twenty two bovine incisors were used, on which the vestibular surfaces were flattened and divided into four experimental groups (n = 15) according to each antioxidant agent, with two groups each, varying the application time of 1 or 10 minutes, all submitted to the same whitening agent (Lase Peroxide) and the control group was only restored. The other groups were treated with antioxidant agents before the restorative procedure using the adhesive system All Bond 3 and resin Filtek Z-350. To obtain the dental fragments, teeth were placed in a precision cutter (Elquip), obtaining 0.8 mm 2 with sticks that were submitted to micro tensile testing at a test speed of 0.5 mm/min. The results, statistically analyzed by ANOVA and Tukey test (p < 0.05), indicated an increase in the value of bond strength of bleached groups treated with ascorbic acid, and a reduction when combined with sodium thiosulfate. No improvement in bond strength was found in the others.
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ISSN:0326-4815
1852-4834