Remineralizing Efficacy of Fluorohydroxyapatite Gel on Artificial Dentinal Caries Lesion

Figure 5

Micro-CT images of artificial dentinal caries lesion before (a1 and a2) and after being capped with FHA gel for 1 week (b1 and b2) and 4 weeks (c1 and c2). Hexagonal crystal covered nearly all the surface of the dentin (b1 and c1), and the mineral density of surface layer significantly increased (b2 and c2). E, enamel; D, dentin; C, crystal; L, lesion.