Volpe, A R A long term clinical study evaluating the effect of two dentifrices on oral tissues. [electronic resource] - Journal of periodontology Feb 1975 - 113-8 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0022-3492 Standard No.: 10.1902/jop.1975.46.2.113 doi Subjects--Topical Terms: AdolescentAdultAgedChildDentifrices--pharmacologyFemaleHumansMaleMiddle AgedMouth Mucosa--drug effectsTooth--drug effectsTooth Abrasion--etiologyTooth Erosion--etiology