Paper Title:
Preparation and Characterization of Thermally Compatible Leucite-Reinforced Dental Ceramics
  Abstract

The high average thermal expansion required for thermal compatibility of dental porcelain with their substrate alloy is supplied by the mineral leucite (KAlSi2O6). In the research, the high thermal expansion coefficients phase leucite was prepared by coprecipitation technique. Three materials with formulae of K2O∶Al2O3∶SiO2 = 1∶1∶x ( x=1.4, 2.0, 4.0 ) were investigated for differences in phase, thermal expansion. Unstoichiometric composition where K2O and Al2O3 were added properly is advantage to leucite obtained. Coprecipitation processing produced fine leucite powder that would sinter at 1300°C, this temperature is about 200°C lower than of melting method. The average thermal expansion coefficients of leucite is 22.7×10-6/°Cfrom room temperature to 620°C,which is higher than the common porcelain. Changing in the leucite content of dental porcelain would results from thermal expansion coefficients of porcelain variation, which could be responsible for changes in porcelain-metal thermal compatibility.

  Info
Periodical
Advanced Materials Research (Volumes 308-310)
Chapter
Innovative Design Methodology
Edited by
Jian Gao
Pages
311-314
DOI
10.4028/www.scientific.net/AMR.308-310.311
Citation
J. Wen, S. Z. Sun, "Preparation and Characterization of Thermally Compatible Leucite-Reinforced Dental Ceramics", Advanced Materials Research, Vols. 308-310, pp. 311-314, 2011
Online since
August 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Cai-Lin Wang, Wei Pan, Q. Xu, C.J. Jiang, Kazutaka Mori, Taiji Torigoe
Abstract:The increase of the efficiency for gas turbines leads to the increasing combustion-chambertemperatures. Rapid degradation of the conventional...
1501
Authors: R.H.L. Garcia, Valter Ussui, Nelson Batista de Lima, Dolores Ribeiro Ricci Lazar
Abstract:The addition of alumina in a zirconia stabilized in a tetragonal phase matrix enhances ceramic hardness and inhibits the tetragonal →...
677
Authors: Chang Woo Kim, Young Soo Kang
Abstract:Nd-Fe-B nanoparticles was prepared by coprecipitation method in aqueous solution. The parameters for the composition are the concentration...
279
Authors: Kai Jun Wang, Jin Hu, Hua Wang, Jian Liang Liu, Xiao Lan Cai, Wen Gui Gao
Abstract:Zirconia precursor was prepared by adding hydrogen peroxide or ethanol in co-precipitation process from raw materials of ZrOC12•8H2O and...
793
Authors: Li Fang Zhang, Cui Zhi Dong, Hui Fang Zhang, Jing Long Bu
Chapter 2: Micro / Nano Materials
Abstract:ZrO2-Al2TiO5 composites were finally prepared with synthetic powders by coprecipitation or solid method...
764