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Effects of a buried magnetic field on cranial bone reconstruction in rats

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Effects of a buried magnetic field on cranial bone reconstruction in rats

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Título Effects of a buried magnetic field on cranial bone reconstruction in rats
Autor Abreu, Maíra Cavallet de
Ponzoni, Deise
Langie, Renan Cavalheiro
Artuzi, Felipe Ernesto
Puricelli, Edela
Abstract The understanding of bone repair phenomena is a fundamental part of dentistry and maxillofacial surgery. Objective: The present study aimed to evaluate the influence of buried magnetic field stimulation on bone repair in rat calvaria after reconstruction with autogenous bone grafts, synthetic powdered hydroxyapatite, or allogeneic cartilage grafts, with or without exposure to magnetic stimulation. Material and Methods: Ninety male Wistar rats were divided into 18 groups of five animals each. Critical bone defects were created in the rats’ calvaria and immediately reconstructed with autogenous bone, powdered synthetic hydroxyapatite or allogeneic cartilage. Magnetic implants were also placed in half the animals. Rats were euthanized for analysis at 15, 30, and 60 postoperative days. Histomorphometric analyses of the quantity of bone repair were performed at all times. Results: These analyses showed significant group by postoperative time interactions (p=0.008). Among the rats subjected to autogenous bone reconstruction, those exposed to magnetic stimulation had higher bone fill percentages than those without magnetic implants. Results also showed that the quality of bone repair remained higher in the former group as compared to the latter at 60 postoperative days. Conclusions: After 60 postoperative days, bone repair was greater in the group treated with autogenous bone grafts and exposed to a magnetic field, and bone repair was most pronounced in animals treated with autogenous bone grafts, followed by those treated with powdered synthetic hydroxyapatite and allogeneic cartilage grafts.
Contido em Journal of applied oral science. Bauru. Vol. 24, no. 2 (Mar./Apr. 2016), p. 162-170
Assunto Cirurgia maxilofacial
Osso e ossos
Terapia de campo magnético
[en] Bone substitutes
[en] Magnetic field therapy
[en] Maxillofacial surgery
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/144268
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