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随着牙科精密铸造的开展,对硅酸乙脂包埋材料作为内层包埋的应用已成一常规,硅酸乙脂结合剂的应用也越来越多。其保存期限为7—15天(常
With the development of dental precision casting, the application of the ethyl silicate embedded material as an inner layer embedding has become a routine, and the application of the ethyl silicate binding agent is also more and more. The shelf life of 7-15 days (often