The face is the main area where epitheses are used when a surgical reconstruction by using the body´s own texture is not possible or wouldn´t lead to satisfying results – for instance after accidents, tumor operations or battlefield injuries. Besides, it is nearly impossible to replicate complicated structures such as the nose, eyelids or the ear in a lifelike way.
It is a craftsmanship to produce perfect epitheses and many production steps are necessary to do so – from the first cast via a wax pattern up to the completed silicone epithesis.
The life time of an epithesis is about two years because its daily use – insertion and removal - leaves marks. In the course of time the material grows pale under the influence of ultraviolet light and air pollution.