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B. A. SAVA1,* , A. DINISCHIOTU2, A. CÎMPEAN2
Ionomeric cements are usually made from vitreous powders of CaO-CaF2-Al2O3-SiO2 composition and aqueous solutions of polyacrylic acids (PAA). Their main advantage consist in the quick working, without cracking or major thermal increases, as well as their high mechanical strength. The chosen vitreous materials are fluoro-alumino-silicatic, from quaternary system CaO-Al2O3-SiO2-F, with some amounts of soda oxides. For the projection of annealing programs are plotted the thermal expansion curves, with the Linseis, L 75 type, dilatometer and are calculated the characteristic temperatures. The thermal expansion coefficients, on 20-320 o C temperature domain, are determined, and measured the density of the samples, by hydrostatic method. The bio-compatibility of the samples is evaluated with the aid of micrographic analyze, made in phase contrast, of the culture osteoblastes in the presence of samples. It is calculated the viability of the human embrionary osteoblastes in the presence of powdered samples.
Ionomeric cements, Fluoro-alumino-silicatic glass, Thermal expansion, Bio-compatibility.
B. A. SAVA, A. DINISCHIOTU, A. CÎMPEAN, Bio compatible glass for ionomeric cements, Optoelectronics and Advanced Materials - Rapid Communications, 2, 5, May 2008, pp.258-261 (2008).
Submitted at: March 10, 2008
Accepted at: May 8, 2008
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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