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Fig. 5 | Applied Adhesion Science

Fig. 5

From: Micromorphological analysis and bond strength comparison of two adhesives for different degrees of dental fluorosis

Fig. 5

SEM results for mild, moderate, and severe DF interface fracture after all-etching adhesive strength test (original magnification, 5.00 k × ; scale bar = 10.0 μm): a Fracture interface of mild fluorosis with more adhesive residue in bond interface.(b Fracture interface of moderate fluorosis; a small amount of adhesive remained, while the dentin tubules were partly exposed. c Fracture interface of severe fluorosis; the enamel was completely exfoliated, the dentin tubules were completely exposed, and the crystals were disordered; the interspace between the crystals was significantly widened, and the number of enamel columns was small. d Normal healthy enamel bonding group as control group

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