Allen, D E Method for hermetically sealing smaller root canals. [electronic resource] - Journal of the American Dental Association (1939) Mar 1968 - 579-81 p. digital Publication Type: Journal Article ISSN: 0002-8177 Standard No.: 10.14219/jada.archive.1968.0069 doi Subjects--Topical Terms: AdolescentAdultAgedFemaleGutta-PerchaHumansMaleMethodsRoot Canal ObturationSilver