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MINERVA STOMATOLOGICA

A Journal on Dentistry and Maxillofacial Surgery


Official Journal of the Italian Society of Odontostomatology and Maxillofacial Surgery
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Minerva Stomatologica 2012 November-December;61(11-12):477-90

language: English, Italian

Treatment of a bone defect consequent to the removal of a periapical cyst with equine bone and equine membranes: clinical and histological outcome

Di Stefano D. A. 1, Andreasi Bassi M. 2, Cinci L. 3, Pieri L. 3, Ammirabile G. 4

1 Department of Dentistry, Vita e Salute San Raffaele University, Milan, Italy;
2 Private Practicioner, Rome, Italy;
3 Department of Anatomy, Histology and Legal Medicine, University of Florence, Florence, Italy;
4 Private Practicioner, Padua, Italy


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AIM: While deproteinized bovine bone and bovine membranes have been well studied and can yield good results when used to treat bone defects and peri-implant dehiscences, enzymatically deantigenated equine bone and equine membranes have emerged as possible alternative biomaterials. The objective of this study was the clinical and histological assessment of such materials: equine bone granules, an equine collagen membrane and an equine pericardium membrane.
METHODS: Enzymatically deantigenated equine bone and an equine collagen membrane were used to restore a bone defect caused by the removal of a bone cyst in the upper anterior maxilla. After 4.5 months, an implant was placed and a bone core sample was obtained from the grafted site. Implants threads, though, were exposed. This defect was grafted with a mixture of autogenous and equine bone and covered with an equine pericardium membrane.
RESULTS: Four months after implant placement the peri-implant bone levels were maintained. A prosthesis was delivered three months later providing functional and esthetic rehabilitation. Also four-year follow-up controls showed implant success. Histological analysis of the bone core revealed that the graft material had undergone remodelling, and a fair amount of newly formed vital bone was present at the time of sample collection.
CONCLUSION: The deantigenated equine bone is biocompatible and undergoes osteoclastic remodelling. Both the equine collagen and pericardium membrane acted as effective barriers for guided bone regeneration.

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distefano@centrocivitali.it