[Review of implantation materials].

The use of nonmetalic, ceramic materials has led to encouraging developments. Some metal implants have proved to be more reliable in general practice in respect to the mechanics and statics; part of the developmental goal however should include compound materials. Metal implants, tolerated by the organism under favorable conditions, were not accepted as well as the ceramic material. Recently, the long-term prognosis therefore has been viewed with reservation. Even though the tensile values were favorable, the mechanical properties were good, and the corrosion rate in terms of adequate tissue tolerance was generally satisfactorily low for metal, the organism still responded to metal as a foreign body.