Journal of

Dental Research, Dental Clinics, Dental Prospects

Original Article

Shear Bond Strengths of Methacrylate- and Silorane-based Composite Resins to Feldspathic Porcelain using Different Adhesive Systems Narmin Mohammadi1 • Maryam Shakur Shahabi2 • Soodabeh Kimyai3 • Fatemeh Pournagi Azar4* • Mohammad Esmaeel Ebrahimi Chaharom4 1

Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran Postgraduate Student, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran 3 Professor, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran 4 Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran *Corresponding Author; E-mail: [email protected] 2

Received: 7 March 2014; Accepted: 17 August 2015 J Dent Res Dent Clin Dent Prospect 2015; 9(3):181-187 | doi: 10.15171/joddd.2015.033 This article is available from: http://dentistry.tbzmed.ac.ir/joddd © 2015 The Authors; Tabriz University of Medical Sciences This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract Background and aims. Use of porcelain as inlays, laminates and metal-ceramic and all-ceramic crowns is common in modern dentistry. The high cost of ceramic restorations, time limitations and difficulty of removing these restorations result in delays in replacing fractured restorations; therefore, their repair is indicated. The aim of the present study was to compare the shear bond strengths of two types of composite resins (methacrylate-based and silorane-based) to porcelain, using three adhesive types.

Materials and methods. A total of 156 samples of feldspathic porcelain surfaces were prepared with air-abrasion and randomly divided into 6 groups (n=26). In groups 1‒3, Z250 composite resin was used to repair porcelain samples with Adper Single Bond 2 (ASB), Clearfil SE Bond (CSB) and Silorane Adhesive (SA) as the bonding systems, after application of silane, respectively. In groups 4‒6, the same adhesives were used in the same manner with Filtek Silorane composite resin. Finally, the shear bond strengths of the samples were measured. Two-way ANOVA and post hoc Tukey tests were used to compare bond strengths between the groups with different adhesives at P