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Shear Bond Strengths of Two Composite Core Materials After Using All‐in‐One and Single‐Bottle Dentin Adhesives
Author(s) -
Sen Deniz,
Akgüngör Gökhan
Publication year - 2005
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/j.1532-849x.2005.00018.x
Subject(s) - crosshead , materials science , adhesive , dentin , bond strength , composite material , single bond , bottle , universal testing machine , molar , composite number , dental bonding , shear (geology) , dentistry , group (periodic table) , ultimate tensile strength , flexural strength , chemistry , medicine , organic chemistry , layer (electronics)
Purpose:The purpose of this study was to compare the shear bond strengths of 2 composite core materials after using all‐in‐one and single‐bottle dentin bonding materials.Material and methods:The occlusal surfaces of 100 extracted, intact human third molars were ground to expose a flattened area of dentin and polished with 600‐grit silicon carbide paper. Specimens were divided into 5 main groups ( n = 20). Three all‐in‐one (AQ Bond, One‐Up Bond, Xeno‐CF Bond) and 2 single‐bottle adhesives (Single Bond, One‐Step Plus) were used. Each group was further divided into 2 subgroups. Ti‐Core and Built‐it F.R. core materials were applied using a translucent plastic ring (diameter: 3 mm, height: 5 mm). After storage in 37°C water for 24 hours, shear bond strengths were measured using a Universal testing machine with a crosshead speed of 0.5 mm/min. Debonded dentin surfaces were examined with SEM. Two‐way analysis of variance (ANOVA) and multiple comparison (Tukey) tests were used for statistical analysis of data.Results:Two‐way ANOVA revealed that the type of core material did not significantly influence the shear bond strength ( p > 0.05), whereas there were significant differences in shear bond strength among the types of bonding agents ( p < 0.0001). Shear bond strengths for single‐bottle adhesive systems were significantly higher than those for all‐in‐one adhesive systems ( p < 0.05). Furthermore, the interaction of these 2 parameters was not significant ( p > 0.05). The fracture modes were predominantly adhesive for all‐in‐one adhesives and cohesive for single‐bottle adhesives.Conclusion:Bonding of composite core materials with the newly developed all‐in‐one dentin adhesives produced lower shear bond strengths as compared with single‐bottle adhesives.