Year : 2016

Volume : Volume 6

Issue : Issue 3

Address for correspondence :
Dr. G Swetha Reddy
drswethareddy12@gmail.com

Abstract

Aim:  Contamination of the operatory field is the major clinical problem that occur during restorative dental treatment. The aim of this study was to investigate the effect of salivary contamination at different stages of bonding on bond strength of a universal bonding agent when used in self-etch pattern to dentin. Materials and Method: 30 freshly extracted teeth were decoronated 2mm from coronal tip of tooth and were randomly divided into 3 groups of 10 each. In group 1: No contamination, in group 2: Specimens were contaminated for 20 secs with saliva, followed by application of bonding agent. Group 3: Specimens were contaminated for 20 secs with saliva, after light curing the bonding agent. Specimens were tested for shear bond strength with universal testing machine at a crosshead speed of 1mm/min. Results: Group 2 i.e. when contamination occurred prior to applying the bonding agent showed lesser bond strength than group 3 where contamination occurred following curing of the adhesive resin. Conclusion: Under the limitation of the current study, Saliva contamination of the substrate had negative effect on the bond strength of the universal bonding system when used in self-etch strategy.

Keywords: Contamination, Self-etch pattern, Universal bonding agent, 10-MDP.