Investigation of Monoclinic Content on Clinically Retrieved Zirconia Heads


Article Preview

The monoclinic zirconia content in clinically failed ceramic heads was investigated in order to identify the cause of the failure. High percentages of the monoclinic zirconia were associated with the fractured surface. In vitro, accelerated aging of some components shows that the monoclinic transformation is site related: the closer to the bore, the more the monoclinic transformation. This phenomenon may be associated with the composition and the manufacturing process.



Key Engineering Materials (Volumes 284-286)

Main Theme:

Edited by:

Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.




W. D. Tong et al., "Investigation of Monoclinic Content on Clinically Retrieved Zirconia Heads", Key Engineering Materials, Vols. 284-286, pp. 999-1002, 2005

Online since:

April 2005




[1] ASTM Designation: F 1873-98. Standard Specification for High-Purity Dense Yttria Tetragonal Zirconium Oxide Polycrystal (YTZP) for Surgical Implant Applications.


[2] S. Frangini, C. Piconi, A. di Bartilomeo, and G. Magnani, Key Engineering Materials, Vols. 192-195 (2001) pp.557-560.

[3] M. Yoshimura, T. Noma, K. Kawabata, S. Ssomiya, J. Mater. Sci. Letter, 6 (1987) 465.

[4] E., Lilley. In Corrosion and Corrosive Degradation of Ceramics, Ceramics Transactions, Vol 10 Ed. R. Tressler and N. McNallan, (1990).