EVALUATION OF MICROLEAKAGE OF DENTAL COMPOSITES USING BONDING AGENTS WITH DIFFERENT PLACEMENT TECHNIQUES: AN INVITRO STUDY

Abstract

Aim: To evaluate the microleakage of bonding agents namely fusion denprovest bond 5 and fusion denprovest bond 7 using composite material   with three different placement techniques.

Materials and Methods: 30 extracted human premolars were taken & divided into 3 groups depending upon application of bonding techniques followed by composite restoration. Specimens were subjected to thermal cycling at 60C, 370C, 540C and again at 370C & then placed in 10 ml each of freshly prepared 2% silver methylene blue alkaline solution for 24 hours in darkness, washed & placed under sun light for 24 hours. The sectioned specimens were then observed under stereomicroscope to detect microleakage.

Results: On comparing the mean microleakage scores among the three groups, maximum microleakage scores have been obtained when no bonding agent was used, while least microleakage scores were obtained with double coat of bonding agent.

Conclusion: The present study suggests that the placement of bonding agent technique before composite restoration can be effective to limit the microleakage at the tooth restoration interface.