Restor Dent Endod.  2015 Feb;40(1):23-29. 10.5395/rde.2015.40.1.23.

Microtensile bond strength of silorane-based composite specific adhesive system using different bonding strategies

• Bastos LA
• Sousa AB
• Drubi-Filho B
• Panzeri Pires-de-Souza FdC
• Garcia LD

• KMID: 2316920
• DOI: http://doi.org/10.5395/rde.2015.40.1.23

Abstract

OBJECTIVES
The aim of this study was to evaluate the effect of pre-etching on the bond strength of silorane-based composite specific adhesive system to dentin.
MATERIALS AND METHODS
Thirty human molars were randomly divided into 5 groups according to the different bonding strategies. For teeth restored with silorane-based composite (Filtek Silorane, 3M ESPE), the specific self-etching adhesive system (Adhesive System P90, 3M ESPE) was used with and without pre-etching (Pre-etching/Silorane and Silorane groups). Teeth restored with methacrylate based-composite (Filtek Z250, 3M ESPE) were hybridized with the two-step self-etching system (Clearfil SE Bond, Kuraray), with and without pre-etching (Pre-etching/Methacrylate and Methacrylate groups), or three-step adhesive system (Adper Scotchbond Multi-Purpose, 3M ESPE) (Three-step/Methacrylate group) (n = 6). The restored teeth were sectioned into stick-shaped test specimens (1.0 x 1.0 mm), and coupled to a universal test machine (0.5 mm/min) to perform microtensile testing.
RESULTS
Pre-etching/Methacrylate group presented the highest bond strength values, with significant difference from Silorane and Three-step/Methacrylate groups (p < 0.05). However, it was not significantly different from Preetching/Silorane and Methacrylate groups.
CONCLUSIONS
Pre-etching increased bond strength of silorane-based composite specific adhesive system to dentin.

Keyword

Adhesive system; Bond strength; Low-shrinkage; Silorane based-composite

MeSH Terms

Adhesives*
Dentin
Humans
Molar
Silorane Resins
Tooth
Adhesives
Silorane Resins

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