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:: Volume 4, Issue 2 (September- 2015) ::
Caspian J Dent Res 2015, 4(2): 27-32 Back to browse issues page
Comparison of shear bond strength of stainless steel brackets bonded with three light- cured adhesives
Zahra Minaei Basharik, Manouchehr Rahmati Kamel , Pouyan Amini Shakib , Maysam Mirzaie * , Ali Bijani
,Dental Materials Research Center, Department of Orthodontics, Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran. , maysam2352@gmail.com
Abstract:   (6816 Views)

Introduction: The bonding process of the brackets to enamel has been a critical issue in orthodontic research. The purpose of this study was to evaluate the shear bond strength of 3 light-cured adhesives (transbond XT, Z250, light bond).

Materials &Methods: In this study sixty extracted human premolars were collected and randomly divided into 3 test groups. All teeth were etched by 37% phosphoric acid. In first group brackets were bonded by Transbond XT adhesive, in group two brackets were bonded by Light bond adhesive and in third group were bonded by filtek Z250 composite. All of them were cured with Ortholux xt for 40 seconds.24 hours after thermocycling, Shear Bond Strength (SBS) values of these brackets were recorded using a Universal Testing Machine. Adhesive Remnant Index (ARI) scores were determined after the failure of the brackets, using Stereo Microscope the data were analyzed using ANOVA and Chi-square tests.

Results: Mean shear bond strength of Transbond XT, light bond and Z250 were 28.9±2.25 MPa, 25.06±1.98 MPa and 26.8±2.57 MPa, respectively. No significant difference was observed in the SBS among the groups and a clinically acceptable SBS was found for the three adhesives. ARI scores were not significantly different between the various groups (P>0.05).

Conclusion: This study showed that the Z250 can be used as light bond and transbond xt to bond orthodontic brackets and ARI and SBS scores were not significantly different.

Keywords: Adhesives, Shear strength, Resin cements, Composite resins
Full-Text [PDF 521 kb]   (1773 Downloads)    
Type of Study: Original Article | Subject: Orthodontics
* Corresponding Author Address: Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran.
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Minaei Basharik Z, Rahmati Kamel M, Amini Shakib P, Mirzaie M, Bijani A. Comparison of shear bond strength of stainless steel brackets bonded with three light- cured adhesives . Caspian J Dent Res. 2015; 4 (2) :27-32
URL: http://cjdr.ir/article-1-150-en.html


Volume 4, Issue 2 (September- 2015) Back to browse issues page
مجله تحقیقات دندانپزشکی کاسپین Caspian Journal of Dental Research
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