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传统的甲基丙烯酸甲脂，从1936年应用于可摘义齿修复已60余年，虽经不断改进，但仍存在金属卡环影响美观；基托颜色难以与牙龈协调一致；材料坚硬、边缘封闭不良等缺点。针对传统义齿上述缺点，！997年4月至1998年4月我科采用美国研制的一种高弹性，抗折力强的高分子材料进行可
The traditional methyl methacrylate, applied to the removable denture for more than 60 years since its introduction in 1936, has been improved in appearance, but the metal clasp still has an aesthetically pleasing effect. The base color is difficult to reconcile with the gums. The material is hard and the edge is closed badly Other shortcomings. Defects against the traditional dentures,! April 997 to April 1998 our department developed by the United States with a high elasticity, high flexural strength of polymer materials can be