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

Sharifi, Maryam and Khoramian Tusi, Somayeh (2017) Comparison of Micro-Shear Bond Strength between Silorane-Based Composite and Conventional Methacrylate-Based Composite to the Dentin of Primary Teeth. Journal of Mashhad Dental School, 41 (4). pp. 317-324.

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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<0.05). Results: Statistically significant differences were observed between the four groups of g1, g2, g3, and g4. The highest bond strength was reported in the second group (etch + silorane bond + composite P90), while the third group (single bond + Z250) had the lowest micro-shear bond strength compared to the other groups. Conclusion: According to the results, silorane-based composite (P90) has higher micro-shear bond strength to the primary dentin compared to the methacrylate-based composite (Z250). Moreover, etching the surfaces could increase the bonding efficiency of P90 to the primary dentin.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 01 Jan 2018 14:19
Last Modified: 01 Jan 2018 14:19
URI: http://eprints.mums.ac.ir/id/eprint/8918

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