Bone regeneration pattern and ankylosis in experimental furcation defects in dogs

Publisher Website
Google Scholar
Abstract
This study reports on the pattern of interradicular bone formation and the frequency and localization of ankylosis following regenerative surgery of experimentally-induced furcation defects in 12 beagle dogs. Observations were made in 39 specimens showing healing with connective tissue attachment in the full circumference of the furcation. Bone regeneration first occurs adjacent to the root surfces, followed by a subsequent fill of the central portion of the interradicular areas. Ankylosis, observed in 24 of the 39 specimens, was more frequent in large defects than in small defects. The incidence of ankylosis increased with increased distance from the base of the original wound. Coronal bone apposition may require or be facilitated by the presence of a root surface, and that undisturbed coronal regeneration may be dependent upon cellular or some other activity from the intact periodontal ligament.