| abstract |
A cover diaphragm (18) of physically compatible or at least partially resorbable material for the temporary covering of a recess in the body's bone tissue filled with bone-forming material, especially granulated hydroxyl apatite, in which the side of the cover diaphragm (18) facing the soft tissue and/or the bone tissue has a retention reinforcing device (36, 38, 42, 44, 46) to improve the retention of the soft tissue or the collagen structure on the cover diaphragm (18). |