Aim: The aim was to evaluate the effect of Colgate Total advanced proshield mouthrinse (Colgate) and Hiora herbal (Hiora) mouthrinses on microleakage of composite resin restorations bonded with two adhesive systems after bleaching with 22% carbamide peroxide.
Materials and methods: A total of 96 Class V cavities were prepared on human premolars. The occlusal and gingival margins were placed 1 mm occlusal to and apical to CEJ respectively. The teeth were randomly divided into two groups based on the adhesive system used: Adper Easy One (ADP) and Clearfil SE Bond (CSE) groups. After composite resin restoration of cavities, thermocycling and bleaching with 22% carbamide peroxide for 4 hours daily for a period of 3 days, the teeth in each adhesive group were further subdivided into two subgroups and were immersed for 12 hours in colgate and hiora mouthrinses. The teeth were then placed in 2% basic fuschin for 24 hours, dissected and microleakage was evaluated under a stereomicroscope at 40×. Data was analyzed with chi2 test and posthoc tukey’s test at p < 0.05.
Results: Microleakage with ADP was significantly higher than that with CSE (p = 0.041). Microleakage at gingival margins was significantly higher than that at occlusal margins. Microleakage with Colgate was higher than that with Hiora in both groups I (p = 0.013) and II (p=0.001).
Conclusion: In the present study, microleakage of composite resin restorations was influenced by the type of the adhesive system, mouthrinse type and the location of the cavity margin.
Clinical significance: Use of some mouthrinses, such as colgate total advanced proshield after bleaching can increase post restoration microleakage of resin composite restorations bonded with adper easy one bonding agent.
Impact Factor
2022: 6.012
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