Examining the phase evolution of lithium disilicate Glass‐ceramics with lithium tantalate as a secondary phase

2021 ◽  
Author(s):  
Anthony V. DeCeanne ◽  
Aubrey L. Fry ◽  
Collin J. Wilkinson ◽  
Marc Dittmer ◽  
Christian Ritzberger ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
Secondary Phase ◽  
Lithium Disilicate ◽  
Phase Evolution ◽  
Lithium Tantalate

scholarly journals Optical and Mechanical Properties of Highly Translucent Dental Zirconia

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3395
Author(s):  
Hee-Kyung Kim
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Fluorescence Emission ◽  
Glass Ceramics ◽  
Secondary Phase ◽  
Lithium Disilicate ◽  
Sintering Behavior ◽  
Chemical Compositions ◽  
Strong Impact ◽  
Dental Ceramics

The aim was to evaluate the translucency, opalescence, and fluorescence of highly translucent zirconia, lithium disilicate, and bovine teeth. One mm-thick specimens of five monolithic zirconia systems, two glass-ceramics, and bovine enamel/dentin were investigated. A spectrophotometer (Ci7600) was used to measure the CIELab color coordinates, and the translucency and opalescence values were obtained. For evaluating the fluorescence emission, the differences in spectral reflectance by the UV component of illumination were calculated. The microstructures of ceramic specimens were examined with a scanning electron microscope and the chemical compositions were determined with an X-ray fluorescence spectrometer. Mechanical properties were appraised with three-point bending strength, indentation fracture toughness, and Vickers hardness. Data were analyzed using a one-way ANOVA, followed by Tukey’s multiple comparison test (α = 0.05). A higher yttria content (5 mol%) significantly improved the translucency of zirconia ceramics, while they were less translucent than lithium disilicate (p < 0.05). Lowering the alumina content below 0.05 wt.% enhanced the translucency (p < 0.05), but a small amount of alumina was still required to obtain full densification. 0.05 wt.% Fe was used to increase the chroma of zirconia specimens without compromising their mechanical properties. The Er-containing zirconia specimen showed a maximal fluorescence emission at 430 nm. The degree of opalescence was affected by the microstructures of ceramic materials. The microstructure, incorporation of a secondary phase, and sintering behavior can have a strong impact on the final mechanical and optical properties of dental ceramics. Addition of small amounts of metal oxides can affect the translucency, opalescence or fluorescence qualities of zirconia

Controlled precipitation of lithium disilicate (Li2Si2O5) and lithium niobate (LiNbO3) or lithium tantalate (LiTaO3) in glass-ceramics

2018 ◽  
Vol 38 (1) ◽  
pp. 263-269 ◽  
Author(s):  
Marc Dittmer ◽  
Christian Ritzberger ◽  
Wolfram Höland ◽  
Markus Rampf
Keyword(s):  
Lithium Niobate ◽  
Glass Ceramics ◽  
Lithium Disilicate ◽  
Lithium Tantalate ◽  
Controlled Precipitation

Influence of the background color and thickness of zirconia reinforced glass ceramics on the optical properties compared to lithium disilicate glass ceramics

2019 ◽  
Vol 65 (4) ◽  
pp. 3607-3615
Author(s):  
Yasser Lotfy Abdelnaby ◽  
Maha Taymor ◽  
Zyad Rabie
Keyword(s):  
Optical Properties ◽  
Glass Ceramics ◽  
Lithium Disilicate ◽  
Background Color

Effect of surface treatments on titanium alloy bonding to lithium disilicate glass-ceramics

2016 ◽  
Vol 116 (5) ◽  
pp. 797-802 ◽  
Author(s):  
Nuno Guilherme ◽  
Chandur Wadhwani ◽  
Cheng Zheng ◽  
Kwok-Hung Chung
Keyword(s):  
Titanium Alloy ◽  
Glass Ceramics ◽  
Lithium Disilicate ◽  
Surface Treatments ◽  
Effect Of Surface

Crystal Phase Formation and Mechanical Properties of Lithium Disilicate Glass-Ceramics for Dental Restoration

2010 ◽  
Vol 177 ◽  
pp. 447-450 ◽  
Author(s):  
Xin Zhang ◽  
Yi Wen Hu ◽  
Yin Wu ◽  
Wen Jie Si
Keyword(s):  
Mechanical Properties ◽  
Phase Formation ◽  
Glass Ceramics ◽  
High Strength ◽  
Lithium Disilicate ◽  
Sem Analysis ◽  
Dental Restoration ◽  
Bending Test ◽  
Crystal Phase ◽  
High Temperature Xrd

The purpose of this study was to evaluate the crystal phase formation behavior and its influence on the mechanical properties of LiO2-SiO2-P2O5 glass-ceramics system. High temperature XRD was used to analyze the crystal phase formation in situ. The crystalline phases in the material both before and after heat-treatment were also analyzed. The flexural strength was measured by three-point bending test according to ISO 6872:2008(E). The SEM analysis showed that the high strength of the glass-ceramics is attributed to the continuous interlocking microstructure with fine lithium disilicate crystallines.

Effect of CaF2 and CaO Substituted for MgO on the Phase Evolution and Mechanical Properties of K-Fluorrichterite Glass Ceramics

2006 ◽  
Vol 89 (2) ◽  
pp. 587-595 ◽  
Author(s):  
Mehdi Mirsaneh ◽  
Ian M. Reaney ◽  
Peter F. James ◽  
Paul V. Hatton
Keyword(s):  
Mechanical Properties ◽  
Glass Ceramics ◽  
Phase Evolution

The effect of spark plasma sintering on lithium disilicate glass-ceramics

2015 ◽  
Vol 31 (10) ◽  
pp. e226-e235 ◽  
Author(s):  
Fatima Al Mansour ◽  
Natalia Karpukhina ◽  
Salvatore Grasso ◽  
Rory M. Wilson ◽  
Mike J. Reece ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Glass Ceramics ◽  
Lithium Disilicate ◽  
Plasma Sintering ◽  
Spark Plasma

Toward revealing atomic deformation mechanics in lithium disilicate and β‐quartz containing glass‐ceramics

2021 ◽  
Author(s):  
Binghui Deng ◽  
Jason T. Harris ◽  
Charlene M. Smith ◽  
Jian Luo
Keyword(s):  
Glass Ceramics ◽  
Lithium Disilicate ◽  
Deformation Mechanics

High-performance, reaction sintered lithium disilicate glass–ceramics

2014 ◽  
Vol 40 (8) ◽  
pp. 12449-12457 ◽  
Author(s):  
Ting Zhao ◽  
Yi Qin ◽  
Pei Zhang ◽  
Bo Wang ◽  
Jian-Feng Yang
Keyword(s):  
High Performance ◽  
Glass Ceramics ◽  
Lithium Disilicate
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