Banca de DEFESA: LEVI OLIVEIRA DOS SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LEVI OLIVEIRA DOS SANTOS
DATA : 21/02/2019
HORA: 14:00
LOCAL: EMEVZ
TÍTULO:

Mechanical evaluation of bovine cortical bone
fractions added to polymethylmethacrylate.

PALAVRAS-CHAVES:

Reconstructive orthopedic surgery, heteroimplants, acrylic cement.

PÁGINAS: 61
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
RESUMO:

The aim of this study was to compare the maximum polymerization temperature
and the mechanical strength of composites containing different concentrations of bovine
cortical bone (OCB) added to polymethylmethacrylate (PMMA), by the axial
compression test. It was used chemical activated acrylic resin and OCB powder
obtained from the diaphysis of fresh bovine tibiae, which were subjected to mechanical
cleaning, washing, degreasing, bleaching, drying, fragmentation, particle size
standardization in 1 mm and autoclave sterilization. The experimental groups were
divided into a control group (CG) containing only of PMMA, group 1 (G1) containing
90% PMMA and 10% OCB, group 2 (G2) containing 80% PMMA and 20% OCB,
group 3 (G3) containing 70% PMMA and 30% OCB and group 4 (G4) containing 60%
PMMA and 40% OCB. Five specimens were prepared for each experimental group by
manual mixing method of the components, using stainless steel bowl and spatula, and a
cylindrical polypropylene mold. The measurement of the polymerization temperature
was get from handmade spherical structure by using an Infrared Laser Digital
Thermometer. The mechanical axial compression test was performed in a manual
electric press. The groups containing OCB powder presented a significant reduction in
the average polymerization temperatures and, except for G4, did not differ from GC in
the axial compressive strength. Therefore, it was concluded groups G1, G2 and G3
presented lower average polymerization temperature values and similar axial
compressive strength values compared to GC.

MEMBROS DA BANCA:
Interno - 1489010 - ALESSANDRA ESTRELA DA SILVA LIMA
Externo à Instituição - ANGELO JOÃO STOPIGLIA - USP
Presidente - 338114 - JOAO MOREIRA DA COSTA NETO
Externo ao Programa - 287212 - THEREZA CRISTINA BORIO DOS SANTOS CALMON DE BITTENCOURT