Abstract: Objective: Research the thermal treatment schedule of K₂O-Na₂O-Al₂O₃-SiO₂ system dental glass ceramics matching Al2O3 ceramics. Methods: Select and analysis the raw material according to K₂O-Na₂O-Al₂O₃-SiO₂ system ,produce glass - Al₂O₃ composite ceramic material. The products were analyzed by polaring microscope and X-ray diffractometer, the compressive strength was tested by material machine. Results: Leucite microcrystal was about 1.0μm, distributed in the glass matrix evenly; The compressive strength was about 460MPa, even the interface of glass combined with Al₂O₃ ceramics need in-depth exploration. Conclusion: K₂O-Na₂O-Al₂O₃-SiO₂ system dental glass ceramics can be sintered and match Al₂O₃ ceramics with special thermal treatment schedule.

Key words: K₂O-Na₂O-Al₂O₃-SiO₂ system dental glass ceramics, Thermal treatment schedule
Al₂O₃, Ceramics