Distribution & Access For Publication Downloads News About Us Contact Us
Paper Titles
Ultimate Strengthening, Theoretical and Limit Tool Hardness
p.128
Machining and Wear of High-Alumina Ceramics for Structural Applications
p.137
Fractal Analysis and Fractography: What Can we Learn that’s New?
p.145
Fractality of Simulated Fracture
p.154
Mechanical Fatigue and Hydrothermal Stability of Y-TZP Dental Ceramics
p.161
Tensile Properties of Open Cell Ceramic Foams
p.168
Influence of the Sample Size on the Results of B3B-Tests
p.176
Contact and Bending Strength Tests of Ceramics: What is the Difference?
p.185
Strength Tests on Silicon Nitride Balls
p.193

Mechanical Fatigue and Hydrothermal Stability of Y-TZP Dental Ceramics

Article Preview

Abstract:

This study was designed to evaluate the effects of dental grinding and sandblasting on the ageing and fatigue behavior of pressure less-sintered biomedical grade Y-TZP ceramic. It was found that upon dental grinding and sandblasting, the surface of the material was heavily damaged in part plastically deformed, but the amount of transformed monoclinic zirconia was low. The partitioned tetragonal zirconia grains and pre-existing monoclinic zirconia in the ground and sandblasted surfaces hindered the propagation of the diffusion-controlled transformation during subsequent ageing. Dental grinding at a high rotation speed lowered the mean strength under static loading and the survival rate under cyclic loading. Sandblasting, in contrast, resulted in surface strengthening and substantially higher survival rate under cyclic loading. For all tested groups, about 10-15 % lower survival strength values were obtained when tested in artificial saliva, compared to dry specimens, implying that stress-assisted corrosion plays an important role in the fatigue behavior of dental zirconia.

You might also be interested in these eBooks
Fractography of Advanced Ceramics III View Preview

Info:

Periodical:

Key Engineering Materials (Volume 409)

Pages:

161-167

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.409.161

Citation:

Cite this paper

Online since:

March 2009

Authors:

Tomaž Kosmač, Cedomir Oblak

Keywords:

Aging, Dental Zirconia, Fatigue

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] J.R. Kelly: Annu. Rev. Mater. Sci. Vol. 27 (1997), p.443.

Google Scholar

[2] I. Denry and J.R. Kelly: Dental Mater. Vol. 24 (2008), p.299.

Google Scholar

[3] T.K. Gupta: J. Am. Ceram. Soc. Vol. 63 (1980), p.117.

Google Scholar

[4] H.K.K. Xu, S. Jahanmir and L.K. Ives: Mach. Sci. Tech. Vol. 1 (1997), p.49.

Google Scholar

[5] T. Kosmac, C. Oblak, P. Jevnikar, N. Funduk and L. Marion: Dental Mater. Vol. 15 (1999), p.426.

Google Scholar

[6] T. Kosmac, C. Oblak, P. Jevnikar, N. Funduk and L. Marion: J. Biomed. Mater. Res. Vol. 53 (2000), p.304.

Google Scholar

[7] P. Pittayachawan, A. McDonald, A. Petrie and J.C. Knowles: Dental Mater. Vol. 23 (2007), p.1018.

Google Scholar

[8] K. Kobayashi, H. Kuwajima and T. Masaki: Solid State Ionics Vol. 3-4 (1981), p.489.

Google Scholar

[9] J. Chevalier, B. Cales and J.M. Drouin: J. Am. Ceram. Soc. Vol. 82 (1999), p.2150.

Google Scholar

[10] P. Jevnikar, I. Sersa, A. Sepe, O. Jarh and N. Funduk: Magn. Reson. Med. Vol. 44 (2000), p.686.

Google Scholar

[11] L. Ruiz and M.J. Readey: J. Am. Ceram. Soc. Vol. 79 (1996), p.2331.

Google Scholar

[12] R.C. Garvie and P.S. Nicholson: J. Am. Ceram. Soc. Vol. 55 (1972), p.303.

Google Scholar

[13] T. Kosmac and C. Oblak: J. Eur. Ceram. Soc. Vol. 28 (2008), p.1085.

Google Scholar

[14] M.V. Swain and R.H.J. Hannink: J. Am. Ceram. Soc. Vol. 72 (1989), p.1358.

Google Scholar

[15] Y. Zhang, B. R. Lawn, E.D. Rekow and V.P. Thompson: J. Biomed. Mater. Res., Vol. 71B (2004), p.381.

Google Scholar

[16] V. Gross and M.V. Swain: J. Aust. Ceram. Soc. Vol. 22 (1986), p.1.

Google Scholar

Scientific.Net is a registered brand of Trans Tech Publications Ltd
© 2024 by Trans Tech Publications Ltd. All Rights Reserved