Fig. 2From: Effect of enamel-surface modifications on shear bond strength using different adhesive materialsSEM results of enamel-surface treatment with different techniques: a 35% phosphoric acid etching of treated enamel surface, b 5.25% NaClO + 35% phosphoric acid etching of treated enamel surface, c 5.25% NaClO of the treated enamel surface, d only polished surface of the enamel surface, and e no treatment of the enamel surfaceBack to article page