[Chemical and thermal compatibility of all-ceramic systems]

The chemical and thermal compatibility of the all-ceramic systems Vitadur-N, Hi-Ceram and In-Ceram as well as the combinations of Dicor with Vitadur-N, Dicor with NBK 1000 and Dicor with Vivodent, respectively, were investigated by means of electronmicroscopy and microprobe measurements at the interface of each compound, and thermomechanical analyses of the components were performed. The results show good contact at the interface of all combinations investigated. No evidence was found for diffusion at the interface except in the In-Ceram system, were a migration of K+ from Vitadur-N dentine into the glassy phase of In-Ceram occurs. The thermomechanical analyses showed a good thermal compatibility of all compounds investigated.