Dental calculus - what causes its formation?
D003460:Crystallization; D003728:Dental Calculus / Q000032:analysis / Q000209:etiology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D012463:Saliva / Q000502:physiology; D012471:Salivary Proteins and Peptides / Q000037:antagonists & inhibitors
D012471:Salivary Proteins and Peptides