[Filling cysts with type 1 bone collagen].

The good properties of bovine bone collagen type 1 for filling of bony defects was demonstrated in 56 cysts of the alveolar bone in 52 patients. 49 cysts (approx. 87%) healed without irritation. 8 months postop. complete reossification of the defects had been achieved in 20 (approx. 36%) of the cysts. Further 32 defects (approx. 57%) were markedly reduced. The discussion will compare the advantages of bone collagen and other materials.