Surface Enamel Remineralization: Biomimetic Apatite Nanocrystals and Fluoride Ions Different Effects

Figure 5

SEM image of enamel surface after application of 37% ortophosphoric acid for 1 minutes. The etching treatment removed aprismatic layer and exposed prismatic and interprismatic hydroxyapatite structures (a), remineralized enamel surface after treatment by synthetic CHA micro-clusters constituted of nanocrystals 20 nm (b) and 100 nm sized (c) and synthetic CHA micro-clusters.

(a)

(b)

(c)