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Crystallization of lithium metasilicate from lithium disilicate glass
Journal of Non-Crystalline Solids, 1995The crystallization behavior of lithium disilicate glass powder heated in molten LiNO3 salt was investigated using X-ray diffraction techniques. Heat treatment at 500°C with LiNO3 molten salt caused a lithium metasilicate, Li2SiO3, crystal phase to appear after 5–96 h.
Jeffrey R. Jacquin, Minoru Tomozawa
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Lithium Disilicate Glass Ceramics
2011In this chapter, the best way to crystallize and process lithium disilicate glass ceramics for dental applications is discussed. In addition, the best way to modify the chemical composition and optimize the microstructure to achieve lithium metasilicate or lithium disilicate is assessed.
Emad El-Meliegy, Richard van Noort
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Sol-gel processing of lithium disilicate
Journal of Materials Science, 1995Lithium disilicate (Li 2 Si 2 O 5 ) coatings were prepared by spin-coating alkoxide solutions on to substrates [Si, SiO 2 , polycrystalline (poly) Si, sapphire] and heating isothermally at 500-600°C. The effects of solution chemistry, coating thickness and substrate type on crystallization behaviour and microstructure development were investigated ...
P. Li, L. F. Francis
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Wear of lithium disilicate opposed by various ceramic materials
Journal of Esthetic and Restorative Dentistry, 2023AbstractObjectivesTo compare volumetric wear of lithium disilicate against different ceramic (3 mol% yttria‐stabilized (3Y) zirconia, 5 mol% yttria‐stabilized (5Y) zirconia, lithium disilicate, porcelain and enamel antagonists).Materials and MethodsForty lithium disilicate (e.max CAD) specimens (n = 8/antagonist) were wet sanded to 1200grit SiC and ...
Krisha Shah +6 more
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The structure of metastable lithium disilicate, Li2Si2O5
Acta Crystallographica Section C Crystal Structure Communications, 1990Cristallisation dans Pbcn avec a=5,683, b=4,784, c=14,648 A, z=4; affinement jusqu'a R=0,063. Cette structure, differente de celle du Li 2 Si 2 O 5 stable, est au contraire similaire a celle du Na 2 Si 2 O 5 -α. Elle consiste en feuillets infinis de silicate, composes de tetraedres de SiO 4 se partageant les sommets, les atomes de lithium etant ...
R. I. Smith +4 more
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Containerless processing of a lithium disilicate glass
Journal of Materials Science, 2007Glasses of Li2O.2SiO2 (LS2), and LS2 doped with 0.001wt% platinum (LS2 + 0.001 wt% Pt) compositions were melted, cooled and reheated at controlled rates while levitated (containerless) inside an Electrostatic Levitator (ESL) furnace at the NASA Marshall Space Flight Center, Huntsville, AL. The experiments were conducted in vacuum (approximately 10(exp -
Ranasinghe, KS +5 more
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Morphogenesis in lithium disilicate glass
1993This thesis was digitised by the British Library from microfilm. You can acquire a single copy of this thesis for research purposes by clicking on the padlock icon on the thesis file. Please be aware that the text in the supplied thesis pdf file may not be as clear as text in a thesis that was born digital or digitised directly from paper due to the ...
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Alteration of the intaglio surface of lithium disilicate glass-ceramic
The Journal of Prosthetic Dentistry, 2019Clinical adjustment of a lithium disilicate glass-ceramic (LDGC) restoration may necessitate its return to the laboratory for additional firing. Evidence of how the intaglio surface should be re-etched after internal adjustment, or after refiring, is lacking.The purpose of this in vitro study was to investigate the effects of different sequences of ...
Catherine M. Gorman +5 more
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Adherence of Streptococcus mutans on lithium disilicate porcelain specimens
The Journal of Prosthetic Dentistry, 2015Streptococcus mutans can adhere at restored tooth margins to cause recurrent caries. Limited information about surface quality and bacterial adherence is available for lithium disilicate ceramic materials.The purpose of this in vitro study was to investigate how bacterial adherence is influenced by commercially available preparations of lithium ...
Diane T, Vo +5 more
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Metastable phases in lithium disilicate glasses
Journal of Non-Crystalline Solids, 1997Abstract This article deals with crystal nucleation in glass, with special emphasis on new findings about metastable phase formation in lithium disilicate glass (LS2) and its effects on crystallization of the stable LS2 crystal phase. The early crystallization stages of slightly sub-stoichiometric LS2 glasses were probed with SAXS and selected area ...
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