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Background: Resin composite is more advanced today, but the marginal leakage still cannot be avoided, for it takes the bonding system. Bonding system aims to provide a layer between a substrate and composite so it has a strong bond. The current latest bonding system is called universal bonding. It can be used with 2 techniques, both self-etch and total-etch. Universal bonding contains 10MDP so there’s no need for etching and priming. 10MDP results in better adhesion than previous bonding monomers generation. A total-etch technique require a pre-etching step to remove smear layer so that it formed porous as a retentive sites. Purpose: Distinguish the marginal leakage of flowable bulkfill composite overlays with the application of total-etch and self-etch bonding systems accompanied by immersion of carbonated beverages. Methods: Tooth samples were prepared to a depth of 2mm, then the bonding agent was applied directly to the cavity without etching (self-etch), etched before the application of bonding agent (total-etch), directly loaded without pre-etching and bonding (control). using a flowable bulkfill composite as a material restorative. All of the sample both total-etch and self-etch soaked in Cola drinks for 5 minutes then repeated until 10 treatment each day (one day is assumed to be 12 hours) up to 7 days, followed by immersion in the methylene blue 0.5 % for 24 hours. Sample then splitted buccolingual direction, leakage was assessed by scoring the edge trough the depth of methylene blue penetration. Results: Mann-Whitney test showed a significance differences (P> 0.05) each group. Conclusion: Marginal leakage of composite restoration with total-etch technique and self-etch technique is smaller than the control group, and the marginal leakage of composite restoration with total-etch technique is smaller than that of self-etch group.

conservative dentistry journal

The Effect Of Self-Etch And Total-Etch Bonding Systems Application On Microleakage Of Bulkfill Flowable Composite Restoration In Carbonated Drink Immersion