Beltrame, A P C A Electronic determination of root canal working length in primary molar teeth: an in vivo and ex vivo study. [electronic resource] - International endodontic journal May 2011 - 402-6 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 1365-2591 Standard No.: 10.1111/j.1365-2591.2010.01839.x doi Subjects--Topical Terms: ChildDental Pulp Cavity--anatomy & histologyElectronics, MedicalHumansMolar--anatomy & histologyOdontometry--instrumentationRoot Canal Therapy--instrumentationRoot Resorption--pathologySensitivity and SpecificityTooth Apex--anatomy & histologyTooth, Deciduous--anatomy & histology