Abstract
Firestone PNF®-200 and later, Ethyl Eypel®-F were compounded with di- and tri-functional acrylates, BaSO4, peroxide activator, and pigment to make a hot water-curing polyphosphazene liner for removable dentures. Advantages include permanent softness (durometer A = 35), energy absorbance, fungus resistance, and bonding to PMMA dentures. Uses may also include facial prosthetics which replace parts of the face lost due to cancer, trauma, or birth defects.