Root Canal Filling MaterialsRetrograde ObturationGutta-PerchaCalcium CompoundsSilicatesZinc Oxide-Eugenol CementRoot Canal ObturationDental LeakageRoot Canal PreparationAluminum CompoundsCalcium HydroxidePeriapical TissueDental Pulp CavityZinc OxideDental InstrumentsMaterials TestingHydrocarbons, IodinatedEpoxy ResinsDental DebondingRetreatmentTooth ApexOxidesDental SolderingApicoectomyDental CementsBleaching AgentsApexificationLasers, Solid-StateDrug CombinationsMethylmethacrylatesMolarTooth, DeciduousCastor OilCalcium SulfateResins, SyntheticDental AmalgamDental Marginal AdaptationBicuspidDental Restoration, PermanentDental MaterialsSalicylatesRoot Canal TherapyDental Pulp NecrosisPeriapical PeriodontitisBisphenol A-Glycidyl MethacrylatePolymethacrylic AcidsComposite ResinsDentinBiocompatible MaterialsTungstenGlass Ionomer CementsMethacrylatesPolyvinylsBismuthDiastoleColoring AgentsMicroscopy, Electron, ScanningTime FactorsEchocardiography, DopplerStatistics, NonparametricAnalysis of VarianceVentricular Function, LeftEchocardiography, Doppler, PulsedMitral ValveStroke VolumeVentricular Dysfunction, LeftHemodynamicsBlood Flow VelocityKinetocardiography