Comparative evaluation of shear bond strength of a dual-cure core build-up composite bonded to dentin using three different self-etch dentin bonding systems - An in-vitro study
Journal Title: Journal of Dental Specialities - Year 2018, Vol 6, Issue 2
Abstract
Aim This invitro study compared the shear bond strength of a dualcure core buildup composite bonded to dentin using a twostep selfetch adhesive with two single step selfetch universal adhesive systemsMaterials and Methods In the present invitro study sixty extracted permanent human mandibular molar teeth decoronated below the dentinoenamel junction to expose the coronal dentin were taken and later mounted in selfcure acrylic resin The specimens were randomly divided into three groups of twenty samples each based on the dentin bonding agents used namely ParaBond a twostep selfetch adhesive and two onestep universal adhesives ie Single Bond Universal and Tetric NBond Universal The dentin surface of samples was treated with the respective adhesives of the groups according to manufacturers instructions The bonded surface was bulk filled using ParaCore dualcure composite The attained samples were stored in distilled water at 370C for 24hrs and subsequently put through thermocycling 50C to 550C for 500 cycles The samples were than subjected to shear loading in Instron Universal testing machine The data were tabulated and statistically analyzed using analysis of variance ANOVA and Tukeys HSD testResults Tetric NBond Universal adhesive showed the highest mean Shear Bond Strength SBS of 2078 MPa followed by Single Bond Universal 1907 MPa and ParaBond Adhesive 544 MPaConclusion Tetric NBond Universal showed the highest mean SBS and a predictable relationship was found between the formulation of dentin adhesive systems and their shear bond strength valuesClinical Significance The universal adhesives showed high shear bond strength as compared to conventional 2step selfetch adhesives High acidic pH of selfetch adhesive affected their bond strength So for stake of bond stability a mild selfetch universal adhesive is recommended for adhesion because higher the bond strength higher it can withstand the stress resulting in a successful restorationKeywords Adhesives Dentin Dualcure composite resins Shear bond strength
Authors and Affiliations
Gaurav Jain, Balakrishnan Rajkumar, Lalit C. Boruah,, R S. Bedi
Keywords
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- EP ID EP512927
- DOI 10.18231/2393-9834.2018.0036
- Views 32
- Downloads 0
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