Comparison of Micro-Shear Bond Strength between Silorane-Based Composite and Conventional Methacrylate-Based Composite to the Dentin of Primary Teeth

Abstract

Introduction: Bond strength between the restorative material and tooth structure is one of the major factors in the selection of restorative materials, which plays a key role in durable restoration and reducing microleakage. Considering the recent attention of researchers to low-shrinkage composites, the present study aimed to compare the micro-shear bond strength of silorane-based composite (P90) with the conventional methacrylate-based composite (Z250) to the dentin of primary teeth. Materials and Methods: In this experimental study, 24 intact primary canines were selected. Two disks (thickness: 2 mm) were prepared from each tooth, and the samples were randomly divided into four groups (n=12). Composite resin cylinders (r=0.7) were adapted on each dentin surface, as follows: g1: (silorane bond system + P90), g2: (etch + silorane bond system + P90), g3: (single bond + Z250), g4: (etch + single bond + Z250). Afterwards, the samples were subjected to a micro-shear bond strength test until failure. Data analysis was performed using Tamhane’s T2 (P

Keywords

• Micro-shear Bond Strength
• Silorane Adhesive System
• Methacrylate Composite
• Self-etch Primer