Dead Fred Zombie Teeth The special fitting material softens in hot water and forms a rigid mold around your teeth. Can be easily re-fit. Takes 20-30 minutes. FX Fangs are fake teeth 'veneer' style special effect dental prosthetics that cover only the front of your teeth. FX Fangs are made using the highest quality dental materials and designed to be ultra-realistic. We provide you with a high-quality low-melt thermoplastic which softens in hot water and anchors the veneer shell teeth in your mouth. The fitting process takes maybe 20-30 minutes and only needs to be completed once to obtain a fit that will last all season. Each set comes with enough fitting plastic for a complete fit and photographic instructions.