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  Indian J Med Microbiol
 

Figure 3: Mean differences in enamel microhardness after treatment with casein phosphopeptide–amorphous calcium phosphate (C+), chitosan microparticles (MPCh), and chitosan nanoparticles (NPCh); **P < 0.01

Figure 3: Mean differences in enamel microhardness after treatment with casein phosphopeptide–amorphous calcium phosphate (C+), chitosan microparticles (MPCh), and chitosan nanoparticles (NPCh); **<i>P</i> < 0.01