Dentin PermeabilityDentinDentin Desensitizing AgentsSmear LayerDentin SensitivityDentinal FluidThioamidesPhosphoric AcidsDental ProphylaxisPermeabilityCitrus sinensisOxalatesToothbrushingDentifricesAcid Etching, DentalRoot PlaningMaterials TestingCell Membrane PermeabilityHydrostatic PressureCapillary PermeabilityMicroscopy, Electron, ScanningDentin-Bonding AgentsDentin, SecondaryDental BondingMethacrylatesDentin DysplasiaOdontoblastsResin CementsComposite ResinsTensile StrengthDentinogenesisDentin SolubilityTooth CalcificationDental Stress AnalysisDental EnamelTooth Demineralization