[Study on the permeability of the infiltration glass of GI- I slip casting aluminous ceramic core]

In order to explore the infiltration condition of GI- I slip casting aluminous ceramic core glass material to aluminous ceramic substratum and provide reference for clinical use, the linear change relationship between the minimal infiltration depth and infiltration time was determined by measuring the minimal depth of glass material infiltrated to aluminous ceramic substratum from one to six hours. The result showed: there is a high linear relationship between the minimal infiltration depth for GI- I infiltration glass and the infiltration time. For clinical use, the minimal infiltration time for GI- I slip casting aluminous ceramic core at least 2.5 hrs and 5 hrs for bridge framework.