Strength, fracture toughness and microstructure of a selection of all-ceramic materials. Part II. Zirconia-based dental ceramics.

@article{Guazzato2004StrengthFT,
  title={Strength, fracture toughness and microstructure of a selection of all-ceramic materials. Part II. Zirconia-based dental ceramics.},
  author={Massimiliano Guazzato and Mohammad Albakry and Simon P. Ringer and Michael Swain},
  journal={Dental materials : official publication of the Academy of Dental Materials},
  year={2004},
  volume={20 5},
  pages={
          449-56
        }
}
  • M. Guazzato, M. Albakry, +1 author M. Swain
  • Published 2004
  • Materials Science, Medicine
  • Dental materials : official publication of the Academy of Dental Materials
OBJECTIVE The present study is the second part of an investigation of strength, fracture toughness and microstructure of nine all-ceramic materials. In the present study, DC Zirkon, an experimental yttria partially stabilized zirconia, In-Ceram Zirconia slip and In-Ceram Zirconia dry-pressed were compared. METHODS Strength was appraised on ten bar-shaped specimens for each material (20 x 4 x 1.2 mm) with the three-point bending method. The fracture toughness (Indentation Strength) was… Expand
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The objective of this study was to investigate how mechanical surface treatments performed for removal of excess of molten glass, influence the fracture toughness of a dental zirconia toughenedExpand
Effect of Zirconia Thickness on the Tensile Stress of Zirconia Based All-Ceramic Restorations
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Comparing three hot-pressed glass-ceramics and alumina glass-infiltrated ceramics, processed by both slip casting and dry pressing, revealed the relationship between the glass matrix and the crystalline phase and the characteristics of the latter were correlated to the strengthening and toughening mechanisms of these glass- Aceramics. Expand
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An examination is made of the sharp-indentation technique of strength-test precracking for toughness evaluation. The experimental approach follows that proposed by other workers but the theoreticalExpand
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Two mechanisms are proposed for the limitation of strength in transformation-toughened zirconia ceramics: that the strength is limited by the critical stress to induce the tetragonal-to-monoclinicExpand
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The effects of ZrO2 additions on the mechanical properties of four commercial aluminas have been studied, and the changes in intergranular and intragranular ZrO2 particles sizes during aging haveExpand
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Observations of the grinding-induced transformation in singlephase Ce-TZP materials, referred to in an earlier paper, are presented. Two techniques were used to grind the surface: by hand in a slurryExpand
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