Journal of Isfahan Dental School

Comparison of Shear Bond Strength of Self-Etch Dentin Bonding Agents and Universal Dentin Bonding Agent to Dentin of Primary Teeth

Document Type : مقاله‌های پژوهشی

Authors

1 Department of Pediatric Dentistry, School of Dentistry, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran.

2 Dental Research Center, Department of Oral and Maxillofacial Medicine, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.

3 Department of Operative Dentistry, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.

Abstract

Introduction: Provision of proper bond strength for tooth-colored restorations is very important in the restoration of primary teeth. The aim of this study was to compare shear bond strengths of Clearfil SE two-step self-etch, Palfique one-step self-etch and G-Premio universal bonding agents.
Materials & Methods: A total of 45 intact extracted primary canine teeth were collected for the purpose of this in vitro study and randomly divided into three groups (n = 15). The buccal surfaces of the teeth were prepared with 600-grit silicon carbide discs. The adhesive was applied by a micro-brush to the surface of the teeth according to manufacturer’s instructions; Z350XT composite resin was placed using a plastic mold measuring 2 mm in diameter and 2.5 mm in length and then light-cured. Finally, the shear bond strength was measured using a universal testing machine. Data were analyzed with ANOVA and Tukey test, using SPSS 21 (α = 0.05).
Results: The highest shear bond strength was recorded in G-Premio bond with a mean of 20.60 MPa. Clearfil SE Bond ranked the second with a mean of 18.62 MPa. Palfique Bond exhibited the lowest bond strength (14.64 MPa). There was a significant difference between G-Premio Bond and Palfique Bond (p value < 0.001) and between SE Bond and Palfique Bond (p value = 0.01). However, there was no significant difference between G-Premio Bond and SE Bond (p value = 0.29).
Conclusion: Since 17 MPa has been proposed as the critical value needed to withstand polymerization shrinkage, both G-Premio Bond and Clear fil SE Bond have adequate strength for use in primary teeth. Palfique Bond exhibited lower bond strength compared to the two other bonding agents inn primary teeth. Due to the fewer steps of G-Premio Bond in the self-etch mode, use of this bonding agent appears to be logical for the restoration of primary teeth.
Key words: Dentin bonding agents, Shear bond strength.

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Journal of Isfahan Dental School
Volume 15, Issue 4 - Serial Number 4
December 2019
Pages 416-423