Comparative evaluation of microtensile bond strength of resin based composite to dentin using an experimental neat-resin dentin bonding agent with ethanol –wet bonding technique – an invitro study

Abstract

With the introduction of acid etching by Buonocore, a predictable bond strength of 20 – 25 MPa was achieved by enamel bonding to composite resin. However, bonding to dentin posed challenges due to the organic nature and moisture content. This resulted in the evolution of dentin bonding agents [1]. Acid etching and drying the surface resulted in collapse of the collagen fibrils hindering in the penetration of the resin. Therefore, water wet bonding was proposed by Kanca, et al. This technique enabled the penetration of resin into the dentinal collagen resulting in a hybrid layer [2].