title: Microbiologic calcification in the formation of calculus.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000378:metabolism; D002113:Calcification, Physiologic; D003728:Dental Calculus / Q000382:microbiology*; D006882:Hydroxyapatites / Q000096:biosynthesis; D051381:Rats
chemical_list: D006882:Hydroxyapatites