The beta tri calcium phosphate (²-TCP) is a biomaterial with excellent osteoconductive properties, biocompatibility by being chemically and crystallographically similar to the human bone tissue as well as having rapid reabsorption which reduces biological reactions. The ²-TCP has been used in bone grafting surgery, especially in the upper regions of the maxilla in order to facilitate the prosthetic rehabilitation with implants. The aim of this study is to evaluate the healing of a biomaterial-based beta tri calcium phosphate, ²-TC in sinus lifting of rabbits, using histological, histomorphometric and immunohistochemistry. Will be used twenty (20) rabbits Albinus who will submit to bilateral sinus lifting surgery surgery. The right maxillary sinus will be filled by clot and the left by ²-TCP. After periods of 3, 7, 14 and 40 days the animals will suffer euthanasia and maxilla is removed for processing and histological, immunohistochemical and histometric. Statistical analysis will be conducted through the comparison between control and treated group. The statistical test used depends on the distribution of these data in relation to normal values.
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