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Minerva Stomatologica 2005 January-February;54(1-2):99-110

Copyright © 2004 EDIZIONI MINERVA MEDICA

language: English, Italian

Subantral filling by deantigenated heterologous bone and immediate fixture placement

De Biase A., Guerra F., Cipriano L., Lamazza L., Tucci E.


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Aim. A successful implant therapy depends on sufficient quantity of available bone. Latero-posterior maxillary area often represents a hardly useful zone for routine implant therapy in long time edentulous patients. Standard procedures of maxillary sinus lifting are the goals of implant-prosthetic rehabilitation. Among different grafting materials used in this kind of procedures, the deantigenated heterologous bone reliability has been tested.
Methods. In a clinical case of maxillary bone atrophy (Misch classification, SA3) a deantigenated heterologous bone grafting and immediate fixture placement has been performed; before prosthetic finalization a biopsy in the grafting site has been carried out in order to obtain an histological evaluation of the graft integration.
Results. The histological analysis and X-ray at 1 year follow-up show the formation of osteoid tissue integrated with the surrounding bone tissue, reaching bone maturity by calcification. In spite of a longer time for grafting integration, the advantages of a single-time surgery and the reduction of surgical timing are stressed.
Conclusion. X-rays and histological results lead authors to consider the tested heterologous bone as a valid alternative to autologous bone, especially in those patients where it is preferable to avoid a second surgical site in order to take an inlay graft.

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