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Chronic, through‐and‐through, furcation defects were created in mandibular premolars of six beagle dogs. These defects were surgically treated without autogenous, cancellous, bone grafts. Healing sockets in the maxilla serged as donor sites. Block specimens were removed after eight weeks. All teeth from all dogs showed some reattachment after treartment as evidenced by newly formed cementum. None of the specimens showed complete regeneration, i.e.a periodontal membrane with new cementum all aroune the fornix of the furcation. Histometric measurements showed that the use of osseous grafts did not improve the results in the present experimental model.
Nilvféus et al. (Fri,) studied this question.