Mechanical properties of calcia stabilized zirconia following in vivo and in vitro aging.
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 4weeks 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.
D000818:Animals; D001672:Biocompatible Materials; D002118:Calcium; D009132:Muscles / Q000601:surgery; D012965:Sodium Chloride / Q000494:pharmacology; D013314:Stress, Mechanical; D015040:Zirconium
D001672:Biocompatible Materials; D012965:Sodium Chloride; D015040:Zirconium; D002118:Calcium