Osteogênese sobre titânio com nanotopografia

• Ano de defesa: 2011
• Autor(a) principal: Schwartz Filho, Humberto Osvaldo [UNESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Implantes dentários; Ossos - Crescimento; Osseointegração; Dental implants; Bones - growth; Osseointegration
• Link de acesso: http://hdl.handle.net/11449/110660

The aims of this study were to evaluate the influence of nanotopography of titanium surfaces in the process of osteogenesis by means of histological assessment of bone-implant contact, in rats, under the effect of forced inhalation of cigarette smoke; To assess the osteogenesis process and the expression of cytokines in primary cell culture on titanium disks with nanotopography; And evaluate morphological and molecular the effect of incorporation of laminin-1 (LN-1) surfaces with nanotopography, in rabbits. Implants and titanium disks were specially produced and submitted to different methods for obtaining surfaces with turned, micro and nanotopography. The surfaces have been properly characterized as its topography, morphology and chemistry. The results showed that: nanotopography is able to increase bone-implant contact (BIC) even in the presence of intermittent inhalation of cigarette smoke, and was able to reduce, although not entirely, their harmful effects and a lower bone formation; Nanotopography may play a important role in mineralization process and in cytokine expression.; And the incorporation of LN-1 on titanium surface with nanotopography favor a higher expression of important genes involved in the cascade of osseointegration.