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VOLUME 16 , ISSUE 4 ( April, 2015 ) > List of Articles

RESEARCH ARTICLE

Can Whitening Strips interfere with the Bond Strength of Composite Resins?

Mateus Rodrigues Tonetto, Rudys Rodolfo de Jesus Tavarez, Leily Macedo Firoozmand, Matheus Coelho Bandeca, Shilpa H Bhandi, Fausto Silva Bramante, Washington Luís Machado dos Reis, Mercêdes Aroucha Vieira, Adriana Gomes Nunes, Regina Vieira de Oliveira Roma

Citation Information : Tonetto MR, de Jesus Tavarez RR, Firoozmand LM, Bandeca MC, Bhandi SH, Bramante FS, Reis WL, Vieira MA, Nunes AG, de Oliveira Roma RV. Can Whitening Strips interfere with the Bond Strength of Composite Resins?. J Contemp Dent Pract 2015; 16 (4):259-263.

DOI: 10.5005/jp-journals-10024-1672

Published Online: 01-04-2015

Copyright Statement:  Copyright © 2015; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The aim of this study was to investigate in vitro the bond strength of composite resins on enamel previously treated with whitening strips.

Materials and methods

A total of 48 bovine incisors were allocated to four experimental groups (n = 12 each): G1 (WSC)— treated with 9.5% hydrogen peroxide whitening strips (3D White Whitestrips® Advanced Vivid/CREST); G2 (WSO)—treated with 10% hydrogen peroxide whitening strips (3D WhiteTM/Oral B); G3 (WG)—treated with 7.5% hydrogen peroxide gel with fluorine, calcium and potassium nitrate (White Class®/FGM); and G4 (C)—control not subjected to bleaching treatment. The specimens were subjected to bleaching over 2 weeks following the manufacturers’ instructions. Following the elaboration of the composite resin test specimens, the samples were stored in artificial saliva and subsequently subjected to the microshear test using the universal testing machine (EMIC®). The bond strength values were analyzed by one-way ANOVA and Tukey's statistical test (5%).

Results

Significant differences were observed among the investigated groups (p < 0.05). The G3-WG exhibited greater values compared with the control group and the groups treated with strips, G1-WSC and G2-WSO. Analysis of the bond interface revealed that a large fraction of the failures occurred at the enamel-resin interface.

Conclusion

The bond strength decreased following 14 days of treatment with bleaching strips, whereas the whitening gel with 7.5% hydrogen peroxide, calcium and fluorine increased the bond strength.

How to cite this article

Firoozmand LM, dos Reis WLM, Vieira MA, Nunes AG, de Jesus Tavarez RR, Tonetto MR, Bramante FS, Bhandi SH, de Oliveira Roma RV, Bandeca MC. Can Whitening Strips interfere with the Bond Strength of Composite Resins? J Contemp Dent Pract 2015;16(4):259-263.


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