Fluoride-Releasing Self-Etch Adhesives Create Thick ABRZ at the Interface

Figure 2

SEM observation of the interface between Clearfil Protect Bond and dentin after acid-base challenge (× 3,500). The ABRZ was sloped from the top to bottom, approaching the dentin. B: bonding resin; D: dentin; H: hybrid layer; OL: outer lesion; R: resin composite.