XRD2 micro-diffraction analysis of the interface between Y-TZP and veneering porcelain: Role of application methods

Tholey, M.J.; Berthold, Christoph; Swain, Michael V.; Thiel, Norbert

doi:10.1016/j.dental.2010.02.002

Cited by 58 publications

(45 citation statements)

References 19 publications

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“…Layering procedures induce phase transformations (t ? m) with local mechanical stress, which could decrease the mechanical stability of the final products [2,19,31]. On the other hand, the strength of the veneering ceramic, related to the degree of crystallinity [2], Fig.…”

Section: Discussionmentioning

confidence: 98%

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Durand¹,

Jacquot²,

Salehi³

et al. 2012

J Mater Sci: Mater Med

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The aim of this study was to evaluate the changes in the transition layer at the interface between yttria partial stabilized tetragonal zirconia polycrystalline (Y-TZP) core and veneering feldspathic ceramic (VITA VM(®)9), under different manufacturing methods. Confocal Raman microscopy and energy dispersive X-ray spectroscopy (EDS) analyses were carried out on tapered veneered cross sections of the interface. For some samples, an additional firing of the core was used, as the application of an optional liner material between the core and veneer. Single Raman spectra were distinguishable between Y-TZP and the veneering materials. VM(®)9 and liner spectra were broadly superimposable. No substantial differences appeared in their chemical elemental composition. 2D Raman images and EDS analysis emphasized changes in the interdiffusion thickness; the additional firing of the core decreased the interdiffusion zone, and the highest firing temperature of the liner increased the interdiffusion zone. These results, which will help us understand the changes in this transition layer, are discussed.

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Section: Discussionmentioning

confidence: 98%

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Durand¹,

Jacquot²,

Salehi³

et al. 2012

J Mater Sci: Mater Med

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show abstract

“…Zirconia has a low thermal expansion, but its low thermal diffusivity results in a high tensile residual stress at the interface with the veneer. [12][13][14][15][16][17][18][19][20][21][22] Tholey et al 23 detected the occurrence of the t/m phase transformation at the stress interface and explained it by the presence of the liquid used to fabricate the veneering ceramics. The aim of this study was to investigate, by using Raman spectroscopy, the occurrence and extent of the phase transformation in Y-TZP ceramic at the veneer-framework interface.…”

Section: -22mentioning

confidence: 99%

Effect of differences in coefficient of thermal expansion of veneer and Y-TZP ceramics on interface phase transformation

Hallmann

Ulmer²,

Wille

et al. 2014

The Journal of Prosthetic Dentistry

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“…The mechanical properties of 3 mol% Y-TZP (3Y-TZP) zirconias depend strongly on grain size (Tholey et al, 2010), and grain size is dependent on sintering time (Hjerppe et al, 2009). Above a critical size, zirconia is less stable and more vulnerable to spontaneous t-m transformation than with smaller grains (< 1 µm) (Tholey et al, in press).…”

Section: Core Materialsmentioning

confidence: 99%

“…This t-m transformation has an associated volume expansion of 3-5%, which, in unalloyed zirconias, can lead to catastrophic failure . However, through the addition of the stabilizing oxides like those in dental ceramics, compressive stresses and microcracks created around the transformed particles effectively oppose opening of the cracks and increase the resistance to crack propagation (Garvie et al, 1975), resulting in the transformation-toughened material with improved strength (Kim et al, 2010a;Tholey et al, 2010).…”

Section: Core Materialsmentioning

confidence: 99%

Performance of Dental Ceramics: Challenges for Improvements

et al. 2011

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The clinical success of modern dental ceramics depends on an array of factors, ranging from initial physical properties of the material itself, to the fabrication and clinical procedures that inevitably damage these brittle materials, and the oral environment. Understanding the influence of these factors on clinical performance has engaged the dental, ceramics, and engineering communities alike. The objective of this review is to first summarize clinical, experimental, and analytic results reported in the recent literature. Additionally, it seeks to address how this new information adds insight into predictive test procedures and reveals challenges for future improvements.

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XRD2 micro-diffraction analysis of the interface between Y-TZP and veneering porcelain: Role of application methods

Cited by 58 publications

References 19 publications

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Confocal Raman microscopy and SEM/EDS investigations of the interface between the zirconia core and veneering ceramic: the influence of a liner and regeneration firing

Effect of differences in coefficient of thermal expansion of veneer and Y-TZP ceramics on interface phase transformation

Performance of Dental Ceramics: Challenges for Improvements

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