Root Canal Filling MaterialsZinc Oxide-Eugenol CementGutta-PerchaRoot Canal ObturationHydrocarbons, IodinatedRoot Canal PreparationCalcium HydroxideDental Pulp CavityZinc OxideEpoxy ResinsTooth, DeciduousDental LeakageRoot Canal TherapyTooth ApexRetreatmentBicuspidPeriapical PeriodontitisMaterials TestingPeriapical TissueRoot Canal IrrigantsDrug CombinationsRetrograde ObturationDental InstrumentsRadiography, BitewingTooth, NonvitalCalcium CompoundsThymolSilicatesTooth RootEndodonticsMolarDental Marginal AdaptationAluminum CompoundsRadiography, DentalPeriapical DiseasesDental Restoration, PermanentCuspidSalicylatesDental Pulp NecrosisBismuthRoot ResorptionIncisorSodium HypochloriteMaxillaDental DebondingDental CementsOxidesApicoectomySemicircular CanalsMandibleDentinRadiography, PanoramicDental SolderingEar CanalApexificationDental ClinicsSpinal CanalSmear LayerBleaching AgentsMethylmethacrylatesCalcium SulfateResins, SyntheticLasers, Solid-StateOdontometryStatistics, NonparametricCastor OilDental AmalgamDental MaterialsPulpectomyDental Pulp Diseases