Avaliação do processo de reparo ao redor de implantes de TiAlV com superfície usinada e modificada: estudo biomecânico em coelhos

• Autor(a) principal: Loureiro, Caroline [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155237; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-04-25/000881196.pdf
• topic: Implantes dentários; Coelho; Osseointegração; Dental implants

In order to accelerate the early stages of the repair process around dental implants, reducing the period of osseointegration, various measures have been suggested, including the topographical modification of the implant surface. The proposition of this study was to evaluate the behavior of the interface formed between bone and implant on the machined surfaces (SU) and modified by sandblasting and acid etching, commercially available (SJA). Topographic characterization of surfaces by means of SEM-EDX system prior to experimental surgery was performed. Albinus Ten rabbits received 20 implants (Ti4Al6V) 4x10mm in surgical beds milled in the medial portion of the right and left tibias, each being an implant surface at each tibia randomly distributed. After placement of each implant was measured its coefficient stability by analyzing frequency by resonance. In periods 3 and 6 weeks the animals were anesthetized, and in vivo was again measured the coefficient of stability of the implant, followed by the biomechanical analysis by removal torque measurements. The values obtained were taken to the analysis of variance and t test Tukey. The SEM-EDX system showed differences between the surfaces analyzed. The average frequency of resonance measured by the SU were 48, 52, 52 ISQ respectively in the periods of 0, 3 and 6 weeks while group SJA to the average measures of resonance frequency were 50, 54, 55 respectively in the same periods. The average removal torque measurements in SU group were 10.6 and 13.9 N / cm, respectively in the periods 3 and 6 weeks, while for the group SJA average removal torque measurements were 19 and 17.4 N / cm in the same periods. There were no statistically significant differences (p <0.05) between the frequency measured by resonance SU and SJA in the analyzed periods. The SJA removal torque...