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Microleakage of resin composites with wet versus dry bonding
1Department of Operative Dentistry, University of Iowa, Iowa City.
Purpose:
To evaluate the effects of wet and dry bonding on microleakage of Class V composite restorations.
Materials And Methods:
Cavity preparations were made in the buccal and lingual surfaces of 25 extracted human third molars. Half of each preparation was in enamel and the other half was in cementum/dentin. The preparations were randomly assigned to five groups for bonding with Scotchbond Dual-Cure (control), Scotchbond Multi-Purpose, or All-Bond 2. Scotchbond Multi-Purpose and All-Bond 2 were applied using both wet and dry techniques. All preparations were restored with a microfill composite after bonding. The specimens were thermocycled 300 times between 5 degrees and 55 degrees C and were subjected to a silver nitrate staining technique to detect marginal leakage.
Results:
Specimens bonded with All-Bond 2 and Scotchbond Multi-Purpose had significantly less leakage than the control. However, there was no statistically significant difference between wet and dry bonding techniques for either material.