Holtzmann, L Root canal treatment of a mandibular first molar with three mesial root canals. [electronic resource] - International endodontic journal Nov 1997 - 422-3 p. digital Publication Type: Case Reports; Journal Article; Review ISSN: 0143-2885 Standard No.: 10.1046/j.1365-2591.1997.00106.x doi Subjects--Topical Terms: Dental Pulp Cavity--abnormalitiesHumansMaleMandibleMiddle AgedMolar--abnormalitiesRadiographyRoot Canal Therapy--instrumentation