Abstract
The previous reports showed the superiority of pure Ti and Ti-6Al-4V alloy as the prefabricated post materials by mechanical and 24-hour cytotoxicity tests.In this study, further long-term L-cell growth inhibition test was preformed on these posts and conventional prefabricated Ni-Cr and 18-8 stainless steel posts.The cells were cultured with MEM solution in which the post had been immersed for some specified periods up to 1 month.With Ag alloy core being cast onto the post, the cell growth was markedly inhibited by the significantly accelerated dissolution of the constituent elements from Ni-Cr alloy and stainless steel through the 1-month immersion.However, pure Ti and Ti-6Al-4V alloy showed no inhibition of the cell growth themselves even when Ag alloy core was cast onto them.
