title: [Letter: Tartar development].
mesh_terms: D002118:Calcium / Q000494:pharmacology; D003728:Dental Calculus / Q000209:etiology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008903:Minerals; D010710:Phosphates / Q000494:pharmacology; D012463:Saliva; D014880:Water Softening
chemical_list: D008903:Minerals; D010710:Phosphates; D002118:Calcium
vernacular_title: Zahnsteinbildung