Development of an experimental glass ionomer cement containing niobium and fluoride
作者： Marcio José Bertolini , Maria Aparecida Zaghete , Rossano Gimenes
DOI: 10.1016/J.JNONCRYSOL.2005.10.008
关键词: Niobium 、 Differential thermal analysis 、 Mineralogy 、 Yield (engineering) 、 Chemical engineering 、 Materials science 、 Chemical resistance 、 Silicate 、 Glass ionomer cement 、 Fluoride 、 Sol-gel
摘要: Abstract Glass ionomer cements (GICs) are currently used for various dental applications such as luting or restorative materials. The calcium fluoro-alumino-silicate system is the basis degradable glasses to obtain GICs. purpose of present paper add niobium conventional glass because according previous papers addition improves chemical resistance and mechanical properties glasses. Therefore, GICs prepared from these would result in with higher resistance. fluoride powders were using sol–gel process characterized by X-ray diffraction, differential thermal analysis (DTA) 27Al 29Si MAS NMR. results obtained XRD showed that this method glass–ceramic. In DTA curve was detected presence Tg Tc temperatures. NMR spectra indicated framework formed SiO4 AlO4 linked tetrahedra which essential structures yield cements. Thus, we concluded silicate can be preparation
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