Reagent Kits, DiagnosticOccult BloodHematologic TestsOrthopedic Fixation DevicesSpinal FusionScoliosisInternal FixatorsIndicators and ReagentsThoracic VertebraeBone ScrewsGuaiacColonoscopySensitivity and SpecificityLumbar VertebraeKyphosisMass ScreeningRoot Canal PreparationSigmoidoscopyColorectal NeoplasmsOrthopedic ProceduresDental InstrumentsTuberculosis, SpinalDental Pulp CavityDiagnostic Tests, RoutineSpineEarly Detection of CancerEquipment DesignRetrospective StudiesTooth ApexSulfhydryl ReagentsReproducibility of ResultsDecompression, SurgicalRoot Canal IrrigantsDiagnostic ErrorsDebridementPredictive Value of TestsTreatment OutcomeSpinal Fractures