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Simultaneous evaluation of magnesia and silica contents’ effect on in-vitro bioactivity of novel bioglasses in the SiO2-CaO-MgO system
, Article Transactions of the Indian Ceramic Society ; Volume 75, Issue 1 , 2016 , Pages 7-11 ; 0371750X (ISSN) ; Mahdieh, Z ; Maddahi, V ; Shokrgozar, M. A ; Mehrjoo, M ; Sharif University of Technology
Taylor and Francis Ltd
2016
Abstract
In this study, bioglasses in SiO2-CaO-MgO system were synthesized through sol-gel method and the effect of silica and magnesia contents on in-vitro bioactivity of the bioglasses were investigated. XRD patterns showed an amorphous structure after heat treatment at 600°C for 2 h for all glasses and also indicated that after immersion in SBF, apatite particles precipitated on glass surfaces and the rate of apatite formation decreased with increasing Mg/Ca ratio. On the other hand, the apatite formation rate was enhanced with increasing the silica content. Furthermore, magnesia contents increased the compressive strength of the samples. According to SEM, higher Mg/Ca ratio led to increase in...
In vitro bioactivity and biocompatibility of magnesium implants coated with poly(methyl methacrylate) - bioactive glass composite
, Article Materials Today Communications ; Volume 33 , 2022 ; 23524928 (ISSN) ; Jafari, H ; Pishbin, F ; Mohandes, F ; Simchi, A ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
Magnesium (Mg) and its alloys have proved promising as biodegradable candidates for the repair of bone tissue. Despite the encouraging bio-related properties of Mg, its high corrosion rate in contact with body fluids still presents a major challenge. An efficient approach to address this issue is to provide a protective coating on Mg. The present research evaluates, for the first time, in vitro bioactivity and biocompatibility of a novel multifunctional composite coating based on poly(methyl methacrylate) (PMMA) biopolymer and bioactive glass (BG) particles on Mg-based implant. Electrophoretic deposition (EPD) was utilized to obtain this coating from a bi-component suspension. Coatings’...