[Healing of a spongiosa graft in the periodontal pocket (animal experimental study)].

Healing of cancellous bone grafts taken from the iliac crest which were implanted in alveolar bone pockets were followed with polychromatic sequence marking in animal experiments using beagle dogs. Healing of the cancellous bone graft is unproblematic only in the case of one- and two-walled defects. A periodontal fissure of normal width, but perforated by ankyloses, formed within seven weeks. The fissures are considerably more pronounced when the dentin is denuded than when the cement layer has been preserved.