Paper Title:

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

Periodical Key Engineering Materials (Volumes 361 - 363)
Main Theme Bioceramics 20
Edited by Guy Daculsi and Pierre Layrolle
Pages 273-276
DOI 10.4028/www.scientific.net/KEM.361-363.273
Citation Martin Palou et al., 2007, Key Engineering Materials, 361-363, 273
Online since November, 2007
Authors Martin Palou, Dušan Bakoš, Eva Kuzielová, Ján Labuda
Keywords Bioactivity, Fluoroapatite, Glas Ceramics, Glass, Lithium Disilicate, Vickers Hardness
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Lithium disilicate glass and glass with addition of P2O5, CaO and CaF2 (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.

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