Shear Bond Strength of Composite Resin on Exposed Dentine Surface Using Vth Generation Bonding Agent With And Without Hybrid Layer –An in Vitro Study & SEM Analysis
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 12
Abstract
The purpose of this study is to remove the collagen layer left back after acid conditioning with 5% sodium hypochlorite and subsequent bonding onto partially demineralised dentine thereby producing more durable adhesion to the hydroxyapatite component of dentine substrate. Twenty recently extracted premolar teeth were divided into 2 groups of 10 teeth each. The enamel on the occlusal surface of teeth was ground to expose dentine and the surface was made flat. The teeth were prepared so that only the crowns remained and embedded in self cure acrylic resin. Each of the prepared 20 teeth were individually embedded in rectangular blocks of self cure acrylic resin. In one group Single bond (3 M) adhesive was used to bond the composite specimen after acid conditioning of the dentinal surface and in the other group acid conditioning was followed by Sodium hypochlorite treatment of the dentinal surface. The test specimens were subjected to Hounsefield tensometer, type W horizontal 2 ton to test the shear bond strength.. The present study concludes that acid conditioning followed by 5% NaOCI treatment creates a dentine substrate which provides more shear bond strength for the Vth generation Single bond adhesive
Authors and Affiliations
Dr Shibu Aman, Dr Sheena P, Dr G Ramachandran, Dr M A Kuttappa
Keywords
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- EP ID EP251504
- DOI 10.9790/0853-1612106069
- Views 84
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