Avaliação da adesão, migração e proliferação de osteoblastos cultivados sobre implantes em diferentes superfícies
Luiz Fernando Teixeira Lima
Dissertação
por
D762
2013.
91 f. : il.
Dissertação (Mestrado em Implantodontia) - Centro de Pesquisas Odontológicas São Leopoldo Mandic.
O sucesso clínico dos implantes dentários tem se tornado uma terapia restauradora bem documentada e aceita cientificamente. A implantodontia busca meios que induzam a uma reparação óssea rápida, guiada e controlada, sendo que o Titânio é o material comumente usado na confecção de implantes...
Ver mais
O sucesso clínico dos implantes dentários tem se tornado uma terapia restauradora bem documentada e aceita cientificamente. A implantodontia busca meios que induzam a uma reparação óssea rápida, guiada e controlada, sendo que o Titânio é o material comumente usado na confecção de implantes dentários. Estudos buscam a produção de tratamentos de superfícies biocompatíveis destes implantes, com tempo menor de osseointegração e aceitação pelo tecido do hospedeiro. A adesão, proliferação e diferenciação dos osteoblastos ao redor dos implantes tem sido objeto de inúmeros trabalhos, in vitro, demonstrando que diferentes tratamentos de superfície podem modular a expressão fenotípica e o metabolismo de células osteoblásticas. O objetivo do presente estudo foi investigar a resposta sobre discos de Titânio com o mesmo tipo de superfície dos implantes dentários, modificada física e quimicamente segundo protocolo do fabricante Signo Vinces, em comparação com uma superfície apenas usinada destas células osteoblasticas. Foram usados corpos de prova: controle (apenas o meio de cultura), usinado (uma superfície com as ranhuras advindas do processo de fabricação) e tratado (esta com as modificações físicas e químicas), três a cada dia repetido por três vezes, para cultura e microscopia eletrônica de varredura (MEV) por 24, 48 e 72 horas. Células osteobla?sticas derivadas de osso parietal de ratos recém-nascidos (OSTEO 1), foram cultivadas em meio de cultura. Após o cultivo das células, foi preparada suspensão celular, esta foi plaqueada sobre a superfície dos corpos de prova que foram mantidos dentro dos recipientes para cultura do tipo microplacas múltiplas. As células foram preparadas para MEV com a finalidade de avaliação da adesa?o e morfologia celulares. Apo?s tre?s dias de incubac?a?o as ce?lulas aderiram e se proliferaram em todos os grupos, as superfícies mostraram-se favoráveis ao crescimento celular que aconteceu em todas elas. As imagens obtidas nas analises do MEV demonstraram que em todas as amostras, os osteoblastos aderiram e se proliferaram em ambas as superfícies, assumiram formas características e peculiares, porém, a proliferac?a?o celular foi similar.
The clinical success of dental implants has become a well-documented and scientifically accepted restorative therapy. The implantology seeks ways that induce a rapid, controlled and guided bone regeneration, and the Titanium is the material commonly used in the manufacture of dental implants. Studies seeking the production of biocompatible surface treatments of these implants, with shorter osseointegration and acceptance by the host tissue. The adhesion, proliferation and differentiation of osteoblasts around implants has been the subject of numerous studies, in vitro, demonstrating that different surface treatments may modulate the phenotypic expression and metabolism of osteoblastic cells. The aim of this study was to investigate the response on titanium disks with the same type of surface of dental implants, physically and chemically modified according to the protocol of the manufacturer Signo Vinces, compared with a machined surface just these osteoblastic cells. Specimens were used: control (culture medium only), machined (a surface with grooves resulting from the manufacturing process) and treated (this with the physical and chemical changes), three each day repeated three times to culture and scanning electron microscopy (SEM) for 24, 48 and 72 hours. Osteoblasts derived from the parietal bone of newborn rats (OSTEO 1), were cultured in the culture medium. After culturing the cells, cell suspension was prepared, this was plated onto the surface of the specimens that were kept inside the containers for culture of multiple microplates type. Cells were prepared for SEM in order to evaluate adherence and cell morphology. After three days of incubation, the cells adhered and proliferated in all groups, the surfaces were favorable to cell growth that happened in all of them. The images obtained in the SEM analyzes showed that in all samples, osteoblasts adhered and proliferated on both surfaces, and took on characteristics peculiar forms, however, cell proliferation was similar.
Ver menos
The clinical success of dental implants has become a well-documented and scientifically accepted restorative therapy. The implantology seeks ways that induce a rapid, controlled and guided bone regeneration, and the Titanium is the material commonly used in the manufacture of dental implants. Studies seeking the production of biocompatible surface treatments of these implants, with shorter osseointegration and acceptance by the host tissue. The adhesion, proliferation and differentiation of osteoblasts around implants has been the subject of numerous studies, in vitro, demonstrating that different surface treatments may modulate the phenotypic expression and metabolism of osteoblastic cells. The aim of this study was to investigate the response on titanium disks with the same type of surface of dental implants, physically and chemically modified according to the protocol of the manufacturer Signo Vinces, compared with a machined surface just these osteoblastic cells. Specimens were used: control (culture medium only), machined (a surface with grooves resulting from the manufacturing process) and treated (this with the physical and chemical changes), three each day repeated three times to culture and scanning electron microscopy (SEM) for 24, 48 and 72 hours. Osteoblasts derived from the parietal bone of newborn rats (OSTEO 1), were cultured in the culture medium. After culturing the cells, cell suspension was prepared, this was plated onto the surface of the specimens that were kept inside the containers for culture of multiple microplates type. Cells were prepared for SEM in order to evaluate adherence and cell morphology. After three days of incubation, the cells adhered and proliferated in all groups, the surfaces were favorable to cell growth that happened in all of them. The images obtained in the SEM analyzes showed that in all samples, osteoblasts adhered and proliferated on both surfaces, and took on characteristics peculiar forms, however, cell proliferation was similar.
Ver menos
Avaliação da adesão, migração e proliferação de osteoblastos cultivados sobre implantes em diferentes superfícies
Luiz Fernando Teixeira Lima
Avaliação da adesão, migração e proliferação de osteoblastos cultivados sobre implantes em diferentes superfícies
Luiz Fernando Teixeira Lima
Exemplares
Nº de exemplares: 1
Não existem reservas para esta obra