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Use of a Synthetic Bone Substitute to Retard Molariform Tooth Drift After Maxillary Tooth Loss in Ponies
- VLAMINCK, LIEVEN E.M., HUYS, LUC, MAES, DOMINIEK, STEENHAUT, MICHEL L.M., GASTHUYS, FRANK
- Veterinary surgery 2006 v.35 no.7 pp. 589-595
- veterinary equipment, synthetic products, maxilla bone, teeth, veterinary dentistry, longitudinal studies, surgery, tooth diseases, postoperative complications, horses
- To evaluate the effect of alveolar bone substitute on post-extraction drift of maxillary cheek teeth in ponies. In vivo longitudinal experimental study. Five ponies (5-7 years) with a healthy dentition. Both maxillary 4th premolar teeth (Triadan 08) were surgically removed. One alveolus was filled with a biocompatible non-resorbable bone substitute (Bioplant® 24), whereas the other healed by second intention. A polyvinylsiloxane plug and spring wire isolated the bone substitute from the oral environment. Pathologic changes to dentition and adjacent soft tissue were recorded. Tooth drift was calculated after 1 and 2 years. At 1 month, bone substitute material was incorporated into healthy tissue. Tooth drift was observed but differed significantly between control and treated sides at 2 years (P<.01). For both techniques, tooth drift differed significantly between years 1 and 2 (P<.001). Total drift in control arcades for year 1 was 10.69±2.12 mm and for year 2 was 9.08±0.87 mm, whereas for bone substitute arcades it was 9.90±1.60 mm for year 1 and 5.60±1.78 mm for year 2. Partial tooth replacement therapy after maxillary P4 extraction provided good healing in the immediate post-surgical phase. Alveolar filling with bone substitute material significantly slowed post-extraction tooth drift but did not stop it completely. Important changes occur in equine dentition after maxillary cheek teeth removal. Further longer term observations are needed to fully validate study findings.