PolyurethanesIsocyanatesToluene 2,4-DiisocyanateCastor OilSiliconesCyanatesElastomersBiocompatible MaterialsMaterials TestingImplants, ExperimentalPolyvinyl ChlorideEquipment FailurePolyestersChemical IndustryAir Pollutants, OccupationalAdhesivesSilicone ElastomersGastrostomySurface PropertiesPolycarboxylate CementTissue ScaffoldsScleral DiseasesCatheters, IndwellingLatexElectroplatingCoated Materials, BiocompatibleOcclusive DressingsMolecular StructureZygomaForeign-Body Reaction