Digital Radiography in Detection of Recurrent Caries Underneath Chlorhexidine Containing Adhesive Versus Conventional Adhesive After One Year Follow up: Randomized Clinical Trial

Peak® Universal Bond (ultradent, 505 West 10200 South, South Jordan, UT 84095،USA ) light-Cured Adhesive with Chlorhexidine (0.2%), 7.5% filler, phosphate and containing hydroxyethyl methacrylate with ethyl alcohol as the carrier. its viscosity has been optimized for minimal film thickness (2μm) and superior strength. using self etch adhesive with chlorexidine as one step in the bonding component may give chance to proper penetration of resin tags, decrease the micro-organisms due to the antibacterial effect of chlorexidine (Bin-Shuwaish, 2016) and also the addition of chlorexidine in bonding system may be an excellent tool to increase the stability of collagen fibrils within the hybrid layer against host-derived metaloproteinases (MMP) without the need for additional steps for the bonding protocol (Stanislawczuk, et al., 2009), which results in better durability and good restorations with decreasing the incidence of recurrent caries

Diagnosis and follow up will be immediate , 6 months later and 1 year