Shear Bond Strengths and Morphological Evaluation of Filled and Unfilled Adhesive Interfaces to Enamel and Dentine

Figure 6

Scanning electron micrograph of the resin-dentin interface bonded with PBNT (400x). An adhesive defect (Gap; G) can be seen in this image. Several reasons may contribute to this event and polymerization deficiency may be one of them. Numerous resin tags have been detached from dentinal tubules. RC: resin composite; AR: adhesive resin; HL: hybrid layer; D: dentin; T: tag.