[Intrusion of periodontally affected teeth using a polyglactin-910-membrane (Vicryl)]

The present study was to determine, if the use of a Vicryl membrane following a full flap procedure and combined with subsequent orthodontic intrusion renders the formation of new attachment more predictable. In an animal experiment eight premolars with reduced periodontia were intruded. The findings were analyzed histologically, histometrically and radiologically. The results provided the basis for a new general classification of the formation of new cementum and bone substance. This classification may serve as a reference system for future studies. The combined orthodontic/periodontologic approach resulted in complete repair and functional restructuring of the destructed interradicular bone and may be a promising alternative in the treatment of furcation invasion. The proximal root surfaces showed less increase in attachment or even further bone loss. Histometric comparison revealed no significant differences between interradicular and proximal root surfaces.