Periodontal LigamentFibroblastsLigamentsGingivaHL-60 CellsMouth NeoplasmsDrug Screening Assays, AntitumorDental CementumCollagenCells, CulturedLigaments, ArticularMedial Collateral Ligament, KneeCollagen Type ICollagen Type IIITooth MovementPeriodontiumAnterior Cruciate LigamentAlveolar ProcessTooth EruptionStress, MechanicalMolarElastinLongitudinal LigamentsTooth RootIncisorTooth MobilityPosterior Cruciate LigamentToothRoot ResorptionDental PulpDental SacPatellar Ligament