Examine the origins of calculus to uncover its link with tartar.
O'Hehir
T E
TE
D003728:Dental Calculus / Q000150:complications; D003731:Dental Caries / Q000517:prevention & control; D003756:Dental Hygienists / Q000193:education; D003773:Dental Plaque / Q000209:etiology; D006801:Humans