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Morphological characterization of single bottle adhesives and vital dentin interface
Ali I Abdalla1, Franklin García-Godoy
1Department of Restorative Dentistry, Faculty of Dentistry, University of Tanta, Egypt. aliebraheem@hotmail.com
Purpose:
To evaluate the in vivo interfacial relationship between four one-bottle adhesives and dentin.
Material And Methods:
Four one-bottle adhesives (Scotchbond 1, Syntac SC, One-Step and Prime & Bond 2.1) were applied on flat dentin surfaces on human anterior teeth scheduled for extraction for dentures. A three-step adhesive system (Scotchbond Multi-Purpose) was used as a control. After adhesive application, a thin layer of composite was applied and light cured. The teeth were extracted immediately after resin curing. All samples were split fractured along their long axis. Half of the samples were deproteinized and decalcified at the interface in order to visualize the hybrid layer. The other halves were completely dissolved to observe the morphology of the resin tags.
Results:
All the one-bottle adhesives produced hybrid layers and resin tags at the dentin-resin interface. The three-step adhesive showed the same interfacial image but with a thicker hybrid layer and longer resin tags.