A clinical trial of a calculus-inhibitory dentifrice.
D002986:Clinical Trials as Topic; D003728:Dental Calculus / Q000517:prevention & control*; D003773:Dental Plaque / Q000517:prevention & control; D003802:Dentifrices; D012968:Etidronic Acid / Q000627:therapeutic use; D005891:Gingivitis / Q000517:prevention & control; D006801:Humans; D009943:Organophosphorus Compounds / Q000627:therapeutic use*
D003802:Dentifrices; D009943:Organophosphorus Compounds; D012968:Etidronic Acid