Fig. 4From: Investigation on the Gradient Nanomechanical Behavior of Dental Fluorosis EnamelNanoindentation creep behavior of the enamel layers of the normal tooth, mild dental fluorosis, and severe dental fluorosis. Identical symbols denote no significant difference in nanoindentation creep behavior among the corresponding layers of the normal tooth enamel, mild dental fluorosis enamel, and severe dental fluorosis enamelBack to article page