Effect of adhesive hydrophobicity on microtensile bond strength of low-shrinkage silorane resin to dentin

Cho, So Yeun; Kang, Hyun Young; Kim, Kyoung A; Yu, Mi; Lee, Kwang Won

doi:10.5395/jkacd.2011.36.4.280

Cited by 1 publication

(1 citation statement)

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“… 9 However, several studies have demonstrated that self-etching adhesive systems have lower bond strength than the conventional adhesives because of the low degree of adhesive infiltration into etched dentin, as the smear layer is not removed, but incorporated into the hybrid layer. 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 Although the primer of the adhesive system of the silorane-based composite promotes intense dentin decalcification and exposes its collagen fibrils, the majority of the dentinal tubules remain obliterated by smear plugs, leading to the formation of a 2.0 µm-thick hybrid layer and few resin tags. 12 Nevertheless, to increase bond strength, the manufacturer of silorane-based composite specific adhesive recommends pre-etching of dentin surface with phosphoric acid before application of the primer.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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ObjectivesThe 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 MethodsThirty 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 × 1.0 mm), and coupled to a universal test machine (0.5 mm/min) to perform microtensile testing.ResultsPre-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.ConclusionsPre-etching increased bond strength of silorane-based composite specific adhesive system to dentin.

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