Evaluation of Microleakage of Dental Composites Using Bonding Agents with Different Placement Techniques: An Invitro Study

• Main Authors: JASVIR KAUR, DEEPIKA KAPOOR, DEEPANSHU GARG, MK SUNIL, ANSHUL SAWHNEY, NEHA MALAVIYA, SHASHANK TRIPATHI, SALONI ARORA
• Format: Article
• Language: English
• Published: JCDR Research and Publications Private Limited 2015-09-01
• Series: Journal of Clinical and Diagnostic Research
• Subjects: adhesion; adhesive dental agents; resin restoratives; pediatric dentistry
• Online Access: https://jcdr.net/articles/PDF/6506/14356_CE[Ra1]_F(AK)_PF1(PAK)_PFA(P)_PFA2(AK)_PF2(PAG).pdf

Background: The rapid progress of adhesive dentistry over the past decade has been attributed to the significant advances in dentin bonding technology. Requirements of an ideal bonding agent are quite similar to those indicated by Buonocore despite of many improvements. As we enter the new millennium, it is important for us to examine the past. Objective: To evaluate the microleakage of three bonding agents namely Single Bond, Prime & Bond NT and Excite using different composite materials namely Z100, Spectrum TPH, Tetric with three different placement techniques. Materials and Methods: Fifty four extracted human premolars were taken & divided into 9 groups depending upon application of bonding agents followed by composite restorations. Specimens were subjected to thermal cycling at 60 C, 370 C, 540 C and again at 370 C & then placed in 10 ml each of freshly prepared 50% silver nitrate solution for 2 hour 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.