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Title: Bone Formation in Grafts with Bio-Oss and Autogenous Bone at Different Proportions in Rabbit Calvaria
Authors: KIM, Yeon JungSAIKI, Carlos Eduardo TakeshiSILVA, KarolineMASSUDA, Carlos Kiyoshi MoreiraFALONI, Ana Paula de SouzaBRAZ-SILVA, Paulo HenriquePALLOS, DeboraSENDYK, Wilson Roberto
Citation: INTERNATIONAL JOURNAL OF DENTISTRY, v.2020, article ID 2494128, 6p, 2020
Abstract: Background. The aim of this study was to assess the volumetric stability and bone formation in grafts with Bio-Oss and autogenous bone at different proportions in rabbit calvaria. Material and Methods. Ten rabbits received four titanium cylinders in their calvaria and randomly divided into the following groups: Group I: Bio-Oss (100%), Group II: Bio-Oss (75%) + autogenous bone (25%), Group III: Bio-Oss (50%) + autogenous bone (50%), and Group IV: autogenous bone (100%). After twelve weeks, the animals were euthanized, and samples were collected for clinical and histological analysis. Results. Clinical analysis showed that Groups I (90.43 +/- 8.99) and II (90.87 +/- 7.43) had greater dimensional stability compared to Group IV (P=0.0005). Histologically, Groups I, II, and III showed areas of bone formation with particles of biomaterial remaining in close contact with the newly formed bone. However, there were no significant differences between the groups regarding the newly formed bone area. Conclusion. It was concluded that the use of Bio-Oss either alone or associated with the autogenous bone at a proportion of 25% showed superior dimensional stability compared to the use of autogenous bone in the proposed experimental model.
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