title: Microhardness of human apical cementum related to fluoride exposure and age.
mesh_terms: D000367:Age Factors; D003739:Dental Cementum / Q000187:drug effects*; D005459:Fluorides / Q000494:pharmacology*; D006244:Hardness; D006801:Humans; D014092:Tooth Root / Q000187:drug effects*
chemical_list: D005459:Fluorides