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:: Volume 22, Issue 1 (Foll Text in Persian 2010) ::
J Iran Dent Assoc 2010, 22(1): 42-48 Back to browse issues page
Effect of CPP-ACP on shear bond strength of composite-resin to bleached enamel
Maryam Khoroushi * 1, Fatemeh Keshani
1- , e.mail: khoroushi@dnt.mui.ac.ir
Abstract:   (14249 Views)

Effect of CPP-ACP on shear bond strength of composite-resin to bleached enamel

 Dr. Khoroushi M.,1 Dr. Keshani F.2

1 Associate Professor, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran. 2 Postgraduate Student, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran.

(Received 29 Nov, 2009 Accepted 9 May, 2010)

Abstract

Background and Aim: Tooth sensitivity is common after vital tooth bleaching. Desensitizers are available as a component of bleaching agents or separated materials. The aim of this invitro study was to evaluate the effect of “GC tooth Mousse (GCTM)” on bond strength of composite resin to bleached enamel.

Materials and Methods: This experimental study was conducted on 48 freshly extracted sound molars. Samples were divided in 4 groups (n=12). In group 1 (negative control) composite resin was bonded on the buccal enamel surfaces. Specimens in groups 2 and 3 were bleached for 6 hrs/d for 5 consecutive days (Daywhite ACP). Group 2 specimens were immediately bonded with composite resin. In group 3, GCTM was used for 30 min in 5 consecutive days and then rinsed after each procedure. On the 5th day the specimens were bonded using composite resin. In group 4, the specimens only received GCTM and then composite resin cylinders were bonded. After 500 rounds of thermocycling, shear bond strength of the samples were measured and the findings were analyzed by Two-way ANOVA and Tukey-Keramer tests. (α = 0.05)

Results: Variance analysis showed significant differences between groups (P = 0.0). The highest and the lowest bond strengths were found in groups 1 and 2 respectively. The Tukey-Keramer analysis showed that using GCTM after bleaching had significant effect on composite shear bonding strength. (P < 0.05)

Conclusion: Within limitations of this invitro study, using the GCTM as a desensitizer agent either alone or during bleaching affected the composite resin bond strength to enamel. More investigation is recommended.

Key words: Bond Strength – Composite resin - CPP-ACP - Tooth Bleaching.

Corresponding Author: Dr. Khoroushi M., Associate Professor, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran.

e.mail: khoroushi@dnt.mui.ac.ir

Keywords: Bond Strength, Composite resin, CPP-ACP, Tooth Bleaching.
Full-Text [PDF 257 kb]   (3215 Downloads)    
Type of Study: Research | Subject: Restorative Dentistry
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Khoroushi M, Keshani F. Effect of CPP-ACP on shear bond strength of composite-resin to bleached enamel. J Iran Dent Assoc 2010; 22 (1) :42-48
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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 22, Issue 1 (Foll Text in Persian 2010) Back to browse issues page
Journal of Iranian Dental Association

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This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly

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