Stress, MechanicalTrabecular MeshworkMechanotransduction, CellularCells, CulturedBiomechanical PhenomenaTissue EngineeringExtracellular MatrixTransforming Growth Factor beta1FibroblastsRNA, MessengerGene Expression RegulationRats, Sprague-DawleyMechanical ProcessesReverse Transcriptase Polymerase Chain ReactionCell ProliferationBlotting, WesternLongitudinal LigamentsPotentillaElasticityMechanical PhenomenaFinite Element AnalysisTensile StrengthPhysical StimulationOssification of Posterior Longitudinal LigamentRespiration, ArtificialModels, BiologicalCytoskeletonPressureMenthaPotamogetonaceaeTooth MovementCapZ Actin Capping ProteinRheologyPeriodontal LigamentActinsMicroscopy, Atomic ForceTime Factors