Fig. 11

SEM images (2000×) of enamel tooth structure exposed to PMF and treated with (a) ChNPs, (b) NaF-0.05%, (c) NaF-2%, (d) ChNPs- NaF-0.05% and (e) ChNPs- NaF-2%.

SEM images (2000×) of enamel tooth structure exposed to PMF and treated with (a) ChNPs, (b) NaF-0.05%, (c) NaF-2%, (d) ChNPs- NaF-0.05% and (e) ChNPs- NaF-2%.