• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • Tagged with
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Estudo histomorfométrico de implantes craniofaciais em coelhos / Histomorphometric analysis of craniofacial implants placed in rabbits

Santos Júnior, João Ferreira dos [UNIFESP] 25 November 2010 (has links) (PDF)
Made available in DSpace on 2015-07-22T20:50:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-11-25 / Objetivo: Análise histomorfométrica de implantes craniofaciais de diâmetros e formatos diferentes com superfície lisa e porosa em tíbia de coelhos. Método: Foram utilizados nessa pesquisa oito coelhos, adultos, fêmeas, albinos, raça Nova Zelândia. Instalamos 40 implantes craniofaciais com formatos cilíndricos (3,75 e 5,0 mm de diâmetro) e cônico (4,3 mm de diâmetro) ambos com 5 mm de comprimento. Os coelhos foram sacrificados 12 semanas, após a instalação dos implantes e as amostras de tecido ósseo submetidos à análise histomorfométrica, para avaliação do contato osso-implante e quantidade de osso formado entre as roscas dos implantes. Resultados: Os valores globais (média e desvio-padrão) do contato osso-implante dos implantes com superfície porosa foi de 73,77% ±6,25 e os implantes com superfície lisa 59,79% ±8,32. Individualmente os valores do contato osso-implante foram os seguintes: o implante poroso de 5,0 mm 72,67% ±7,44, implante liso de 5,0 mm 58,33% ±7,01, implante poroso 4,3 mm 76,80% ±5,58, implante liso 4,3 mm 61,26% ±9,78 e implante poroso 3,75 mm 71,84% ±5,24. Conclusão: existe maior valor estatisticamente significante (p<0,001) de contato osso-implante nos implantes com superfície tratada. Não existe diferença estatisticamente significante, quanto ao contato osso-implante, entre os diferentes tamanhos de implante (3,75 mm / 4,3 mm / 5,0 mm) e formatos dos mesmos (cônico e cilíndrico). / Purpose: Histomorphometric analysis of craniofacial implants of different shapes and diameters, with machined and porous surfaces, placed in the tibia of rabbits. Method: In this study, 40 craniofacial implants with cylindrical shapes (3.75 and 5.0 mm in diameter) and conical (4.3 mm in diameter) both with 5 mm in length were implanted in the tibia of 8 adult female New Zealand white rabbits. The animals were sacrificed 12 weeks after installation of implants. Bone specimens were prepared for histomorphometric assessment of the bone-to-implant contact and the bone volume formation between implant threads. Results: The overall bone-to-implant contact values (mean and standard deviation) were 73.77 ± 6.25% with porous surface implants and 59.79 ± 8.32% with machined surface implants. Individual group values of bone-to-implant contact were as follows: 5.0 mm porous implant 72.67 ± 7.44%; 5.0 mm machined implant 58.33 ± 7.01%; 4.3 mm porous implant 76.80 ± 5.58%; 4.3 mm machined implant 61.26 ± 9.78%; and 3.75 mm porous implant 71.84 ± 5.24%. Conclusion: There was statistically significant greater bone-to-implant contact values with porous surface implants (p <0.001). There was no statistically significant difference on the bone-to-implant contact between different implant sizes (3.75 mm / 4.3 mm / 5.0 mm) and shapes (cylindrical and conical). / TEDE / BV UNIFESP: Teses e dissertações

Page generated in 0.0672 seconds