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Potential Applications of Glass and Glass-Ceramics Based on Lithium Disilicate as Biomaterials

机译：基于二硅酸锂作为生物材料的玻璃和玻璃陶瓷的潜在应用

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Lithium disilicate glass and glass with addition of P_2O_5, CaO and CaF_2 (in relative ratios corresponding to 10 wt. % of ,,apparent fluoroapatite") were prepared by quenching their melts obtained at 1400°C. Then, the parent glasses were thermally treated at 550°C and 750°C to obtain glass ceramics. The bioactivity test in vitro and the Wicker hardness in relation to ,,apparent fluoroapatite" presence and heat treatment were investigated. The presence of fluoroapatite in samples promotes mineralization of new phase apatite-like on the surface of glass and glass ceramics after 6-week immersion in SBF as proved by SEM and EPMA. The bioactivity decreases with thermal treatment of parent glass. However, whole surface of glass-ceramics was covered with apatite phase after long-term immersion in SBF. The Vickers hardness of samples increases with increasing temperature treatment and with the presence of fluoroapatite.
机译：通过使它们在1400℃下获得的熔体骤冷来制备二硅酸锂玻璃和添加了P_2O_5，CaO和CaF_2的玻璃（相对比例为表观氟磷灰石的10 wt。％）。然后，对母体玻璃进行热处理分别在550℃和750℃下制备玻璃陶瓷。研究了体外生物活性测试以及与明显的氟磷灰石的存在和热处理有关的维氏硬度。 SEM和EPMA证明，将样品中的氟磷灰石浸入SBF中6周后，样品中氟代磷灰石的存在会促进玻璃和玻璃陶瓷表面新相磷灰石的矿化。生物活性随着母体玻璃的热处理而降低。但是，长时间浸泡在SBF中后，玻璃陶瓷的整个表面都被磷灰石相覆盖。样品的维氏硬度随温度处理的增加和氟磷灰石的存在而增加。

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