Tissue ScaffoldsBiodegradable PlasticsTissue EngineeringBiocompatible MaterialsPorosityPolyurethanesOxygenPolyestersMaterials TestingOxygen ConsumptionReactive Oxygen SpeciesNanofibersOxygen Inhalation TherapySinglet OxygenPolyglycolic AcidAbsorbable ImplantsDecanoatesMicroscopy, Electron, ScanningPolymersBone RegenerationGuided Tissue RegenerationSilkOxygen IsotopesBiomimetic MaterialsDurapatiteBone SubstitutesLactic AcidImplants, Experimental