Pressed ceramics onto zirconia. Part 1: Comparison of crystalline phases present, adhesion to a zirconia system and flexural strength

Abstract Objectives To compare the crystalline phases present, quantify the adhesion to zirconia and measure the mechanical properties of four commercially available pressed ceramics suitable for zirconia substructures. Materials and methods This study compares the X-ray diffraction response and the...

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Bibliographic Details
Published in:Dental materials 2011-12, Vol.27 (12), p.1204-1212
Main Authors: Choi, Jung Eun, Waddell, J. Neil, Torr, Brendan, Swain, Michael Vincent
Format: Article
Language:English
Subjects:
Adhesion
Advanced Basic Science
Algorithms
All-ceramic restorations
Aluminum Silicates - chemistry
Ceramics
Ceramics - chemistry
Crystallization
Dental Bonding
Dental Materials - chemistry
Dental Porcelain - chemistry
Dental Stress Analysis - instrumentation
Dentistry
Diffraction
Elastic Modulus
Flexural strength
Hot Temperature
Humans
Materials Testing
Mechanical Phenomena
Microscopy, Electron, Scanning
Modulus of rupture in bending
Pliability
Potassium aluminum silicates
Pressed ceramics
Presses
Stress, Mechanical
Surface Properties
Time Factors
Vacuum
X-Ray Diffraction
Yttrium - chemistry
Zirconia
Zirconium - chemistry
Zirconium dioxide
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Summary:Abstract Objectives To compare the crystalline phases present, quantify the adhesion to zirconia and measure the mechanical properties of four commercially available pressed ceramics suitable for zirconia substructures. Materials and methods This study compares the X-ray diffraction response and the mechanical properties of four different pressed ceramics (Noritake CZR Press, Vita PM9, Wieland PressXzr and IPS e.max ZirPress) to Vita In-Ceram YZ zirconia substrate. The adhesion was determined using the interfacial strain energy release rate fracture mechanics approach; in addition biaxial flexural strength values of each material was determined. Results X-ray diffraction analysis revealed that Noritake CZR Press and Vita PM9 contain leucite whereas IPS e.max ZirPress and Wieland PressXzr are non-leucite amorphous materials. The strain energy release rate results revealed that the pressed ceramics with leucite have better adhesion than non-leucite ceramics to zirconia. Differences were observed between biaxial strength results for the pressed ceramics from bilayer compared with monolayer specimens. Conclusions Pressed ceramics compatible with zirconia tested in this study were of two types; leucite containing and non-leucite containing essentially glass ceramics. Leucite containing pressable ceramics appears to have better adhesion to zirconia.
ISSN:0109-5641
1879-0097
DOI:10.1016/j.dental.2011.08.006