๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Mechanical properties of calcia stabilized zirconia following in vivo and in vitro aging

โœ Scribed by Kenner, G. H. ;Pasco, W. D. ;Frakes, J. T. ;Brown, S. D.

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
177 KB
Volume
9
Category
Article
ISSN
0021-9304

No coin nor oath required. For personal study only.

โœฆ Synopsis

Abstract

Aging studies were done on calcia stabilized zirconia rods of 72% theoretical density to determine the effect of actual and simulated biological environments on their strength. They were aged without stress in vitro in Ringer's solution for 1, 2 and 4 weeks or in vivo in rabbits for 12 weeks. Rods aged in vitro showed mean losses in bending strength of 16, 17 and 19% respectively after 1, 2 and 4 weeks of immersion, while those aged in vivo showed a mean loss of 25%. It was concluded that the material tested would be unsatisfactory as an orthopedic replacement because of the rapid decrease in strength which occurred when exposed to actual or simulated biological media.

๐Ÿ“œ SIMILAR VOLUMES

Mechanical properties and short-termin v
Mechanical properties and short-termin vivo evaluation of yttrium-oxide-partially-stabilized zirconia
โœ Christel, P. ;Meunier, A. ;Heller, M. ;Torre, J. P. ;Peille, C. N. ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 991 KB

Yttrium-oxide-partially-stabilized zirconia (YPSZ) belongs to a new class of ceramics exhibiting an improved toughness when compared to alumina. The toughening mechanism is related to a martensitic-like transformation of tetragonal metastable grains into a monoclinic state occurring at the crack tip

Molecular and mechanical property change
Molecular and mechanical property changes during aging of bone cementin vitro andin vivo
โœ Looney, M. A. ;Park, J. B. ๐Ÿ“‚ Article ๐Ÿ“… 1986 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 842 KB

The changes in mechanical properties and free radical concentration of curing Simplex P Radiopaque Bone Cement in vivo and in vitro conditions were studied. Samples were prepared so that each in vivo sample that cured and aged in the canine femoral intramedullary cavities had an in vitro counterpart

Long-termin vivo andin vivo aging of a z
Long-termin vivo andin vivo aging of a zirconia ceramic used in orthopaedy
โœ Cales, B. ;Stefani, Y. ;Lilley, E. ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 640 KB

## Abstract A detailed study of a commercial zirconia (Yโ€TZP) aged at 37ยฐC held in Ringer's solution or transplanted in animals or humans is reported. No degradation in strength was found for MOR bars or for hip joint heads subjected to stresses caused by pressing titanium alloy trunnions into the

In vivo andin vitro aging of orthopedic
In vivo andin vitro aging of orthopedic aluminas
โœ Fahr, A. ;Brown, R. F. ;Day, D. E. ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 898 KB

## Abstract The flexural strength, microstructure and relative Ca and Si concentration at the surface of two commercial orthopedic aluminas were studied before and after aging up to 52 weeks in simulated body fluids or in subcutaneous implantation in rodents. There was no significant reduction in f