Maxillary sinus elevation surgery with chronos and autogenous bone graft: Analysis of histometric and volumetric changes
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2016-01-01
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Pereira, Rodrigo dos Santos [UNESP]
Boos, Fernanda Brasil Jorge Daura [UNESP]
Gorla, Luis Fernado [UNESP]
Garcia, Idelmo Rangel [UNESP]
Okamoto, Roberta [UNESP]
Hochuli-Vieira, Eduardo [UNESP]
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The aim of this study was to compare the bone resorption rate and histometry of ChronOS, a beta-tricalcium phosphate (β-TCP), mixed with autogenous bone grafts (1:1) with that of autogenous bone grafts alone in maxillary sinus elevation surgery. A total of 12 maxillary sinuses were grafted with an autogenous bone graft (control group) and 9 with ChronOS mixed with an autogenous bone graft (test group). Postoperative cone beam computed tomography (CBCT) was used to measure the initial graft volume after 15 days (T1), and 6 months later another CBCT scan was performed to evaluate the final graft volume (T2) and determine the graft resorption rate. The resorption outcomes were 45.7% ± 18.6% in the control group and 38.3% ± 16.6% in the test group (P = .17); the bone formation rate was 38.6% ± 10.5% in the control group and 25.4% ± 6.4% in the test group (P = .001). ChronOS mixed with autogenous bone graft demonstrated a resorption rate similar to that of the autogenous bone graft but with a difference in bone formation after 6 months.
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International Journal of Periodontics and Restorative Dentistry, v. 36, n. 6, p. 885-892, 2016.