de Chevigny, Cristian Treatment outcome in endodontics: the Toronto study--phase 4: initial treatment. [electronic resource] - Journal of endodontics Mar 2008 - 258-63 p. digital Publication Type: Evaluation Study; Journal Article; Research Support, Non-U.S. Gov't ISSN: 0099-2399 Standard No.: 10.1016/j.joen.2007.10.017 doi Subjects--Topical Terms: FemaleHumansLogistic ModelsMaleMiddle AgedMultivariate AnalysisOntarioPeriapical Periodontitis--diagnostic imagingPrognosisRadiographyRoot Canal TherapyTreatment Outcome