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Previous issue date: 2017-10-19 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A perda dentária promove uma severa e irreversível reabsorção do osso alveolar, especialmente na região posterior da maxila, dificultando a reabilitação com implantes ósseointegrados e para conseguir um aumento em altura e espessura do osso maxilar, pode ser necessário o uso de biomateriais como subtitutos ósseos. A proposta deste estudo foi avaliar o processo de ossificação com o uso do biomaterial Biogran® (Orthovita, Malvern, PA, EUA), à base de vidro bioativo, como uma opção de substituto ósseo em técnica de levantamento do assoalho do seio maxilar através de análises histológica e histométrica. Para tal, foram utilizados quinze coelhos Albinus machos brancos da raça Nova Zelandia pesando 3 a 4 Kg aproximadamente que foram divididos aleatoriamente em dois grupos segundo o material de enxerto do seio maxilar: Grupo osso autógeno e grupo vidro bioativo/Biogran®. Foi realizado o descolamento bilateral da membrana sinusal e realizado o enxerto com o Biogran® e osso autógeno respeitivamente e os períodos estudados foram de 7, 15 e 40 dias para a análise histológica e histométrica. A porcentagem de neoformação óssea foi maior no grupo osso autógeno aos 7 e 15 dias, entretanto, não houve diferença estatistica entre os grupos aos 40 dias (p>0,05). Foi possível concluir que o vidro bioativo/ Biogran® é capaz de conduzir o processo de formação óssea de forma satisfatória, apresentando resultados semelhantes ao enxerto de osso autógeno e tornando-o uma alternativa viável para aumentar a altura óssea na região posterior maxilar. / The dental loss promotes a severe and irreversible reabsorption of the alveolar bone, especially in the posterior region of the maxilla, making it difficult to rehabilitate with osseointegrated implants and to achieve an increase in height and thickness of the maxillary bone, it may be necessary to use biomaterials as bone substitutes. The purpose of this study was to evaluate the ossification process using Biogran® (Orthovita, Malvern, PA, USA) bioactive glass based biomaterial as a bone substitute option in the technique of lifting the floor of the maxillary sinus through histological and histometric analyzes. For this purpose, fifteen white New Zealand Albinus male rabbits weighing approximately 3 to 4 kg were randomly divided into two groups according to the maxillary sinus graft material: Autogenous bone group and Bioactive glass/ Biogran® glass group. Bilateral detachment of the sinus membrane was performed and the graft was performed with Biogran® and autogenous bone respectively and the periods studied were 7, 15 and 40 days for histological and histometric analysis. The percentage of new bone formation was higher in the autogenous bone group at 7 and 15 days, however, there was no statistical difference between groups at 40 days (p> 0.05). It was possible to conclude that BioGran®/bioactive glass is capable of conducting the bone formation process satisfactorily, presenting results similar to the autogenous bone graft and making it a viable alternative to increase bone height in the maxillary posterior region. / 10443134
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.unesp.br:11449/152142 |
| Date | 19 October 2017 |
| Creators | Munoz, Xiomara Monica Johanna Palacio [UNESP] |
| Contributors | Universidade Estadual Paulista (UNESP), Garcia Junior, Idelmo Rangel [UNESP] |
| Publisher | Universidade Estadual Paulista (UNESP) |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UNESP, instname:Universidade Estadual Paulista, instacron:UNESP |
| Rights | info:eu-repo/semantics/openAccess |
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