Effect of adjunctive application of XXXX and @entity1068 -wet bonding on adhesive-dentin bonds.

@entity174 @entity1068 @entity3089 @entity3090
OBJECTIVES: To determine the effect of the combined use of @entity3089 ( @entity3090 ) and @entity1068 -wet bonding (EWB) on resin-dentin bonds. METHODS: Sixty molars were sectioned, polished, and randomly divided into six groups (n=10) according to the following pretreatments: group 1, water-wet bonding (WWB); group 2, WWB with 0.02% (w/v) @entity3090 ; group 3, WWB with 0.1% @entity3090 ; group 4, EWB; group 5, EWB with 0.02% @entity3090 ; and group 6, EWB with 0.1% @entity3090 . An etch-and-rinse adhesive was then used, followed by the resin composites building. The microtensile bond strength (MTBS), failure modes and interfacial nanoleakage were separately determined after 24h water storage or 10,000 runs of thermocycling. RESULTS: Both pretreatment method (P<0.05) and thermocycling (P<0.05) significantly influenced bond strength and nanoleakage. Irrespective of thermocycling, the 0.02% @entity3090 / @entity1068 (group 5) pretreated adhesive-dentin interfaces showed higher MTBS than the control group (P<0.05). Nanoleakage expression of all groups increased after thermocycling (P<0.05) except group 5. Adhesive failure was the main @entity174 pattern in all groups. CONCLUSION: This study showed that pretreatment with 0.02% @entity3090 / @entity1068 solutions can effectively improve immediate bond strength and bond stability of etch-and-rinse adhesives on dentin. CLINICAL SIGNIFICANCE: The adjunctive application of @entity3090 and EWB provides a new strategy for dentists to obtain the desired bond effectiveness during adhesive restoration in clinical practice.
