ApicoectomyRetrograde ObturationToothCalcium CompoundsSilicatesPeriapical PeriodontitisAluminum CompoundsTooth ApexRoot Canal PreparationRoot Canal Filling MaterialsOxidesTooth LossTooth GermTooth, DeciduousTooth CrownTooth RootTooth EruptionTooth, SupernumeraryTooth AbnormalitiesTooth WearTooth ExtractionTooth, NonvitalMolarTooth, ImpactedTooth DiscolorationTooth, UneruptedIncisorOdontogenesisTooth Cervix