Periodontal Attachment LossPeriodontal IndexPeriodontal PocketDental Plaque IndexGuided Tissue Regeneration, PeriodontalChronic PeriodontitisGingival RecessionGingival HemorrhageDental ScalingPeriodontal DiseasesPeriodontal DebridementAlveolar Bone LossRoot PlaningGingival Crevicular FluidPeriodontitisGingivitisBone SubstitutesGingivoplastyAggressive PeriodontitisGingivaTooth RootDental Enamel ProteinsFurcation DefectsDental PlaqueBone RegenerationAbsorbable ImplantsSurgical FlapsPeriodontiumConnective TissueTooth MobilityStatistics, NonparametricTooth MigrationOral HygieneDental ProphylaxisTooth CervixObject AttachmentDepth PerceptionTreatment OutcomeFollow-Up StudiesVirus AttachmentReactive Attachment DisorderCross-Sectional StudiesCase-Control StudiesCell AdhesionVision DisparityBacterial Adhesion