Temporary implant materials based on biodegradable metals are breaking the current paradigm in biomaterial science to develop only corrosion resistant metals. Especially metals and alloys which are mainly made of physiological trace elements are promising candidates for this approach. The idea of biodegradable implants and coatings is to support tissue regeneration and tissue healing in a specific application by material degradation and concurrent implant replacement through the surrounding tissue. To get an overview over the current experimental and clinical applications this symposium is open for all kinds of degradable materials such as metals, polymers, ceramics, bioactive glasses. It is intended to discuss the degradation mechanisms, cellular reactions and the design of in vitro tests for this class of materials.