Strength and Fracture Toughness of Ceramic Materials for Metal-Ceramic Prosthetic Dentistry |
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| Authors: | D. Yu. Ostrovoi G. A. Gogotsi S. A. Gorban’ S. P. Oshkaderov V. I. Stepkin A. N. Bobokal |
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| Affiliation: | (1) Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine;(2) Jendental-Ukraine JV, Kiev, Ukraine;(3) Frantsevich Institute of Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine;(4) Bogomolets National Medical University, Kiev, Ukraine |
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| Abstract: | The strength in biaxial flexure and the fracture toughness on indentation of the specimens of ceramic materials for the coverage of metal-ceramic prostheses were studied. The strength was established to be mainly determined by their microstructure and sintering conditions. Comparative studies demonstrated that Ultropaline and VITA OMEGA 900 ceramic compositions exhibited more uniform distribution of leucite microcrystals and higher strength and fracture toughness than Duceram Plus and IPS Classic materials.__________Translated from Problemy Prochnosti, No. 3, pp. 128 – 139, May – June, 2005. |
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| Keywords: | ceramics strength fracture toughness indentation |
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