牙磨片是口腔医学教学与科研的重要组成部分 ,而牙磨片技术的关键在于对牙齿的薄切。传统的方法是单个砂片切割牙齿 ,致使切出的牙片厚薄不匀 ,甚至残缺破损。我们在实践中应用组合砂片 ,成功地切出薄而均匀的牙片。　　　一、材料和方法1.仪器和切割材料 :强力手机 (韩国Ｍａ Tooth grinding is an important part of dental teaching and research, while the key to dental grinding technique lies in the thinning of teeth. The traditional method is to cut the teeth with a single piece of sand, resulting in uneven thickness of the cut out tooth, or even incomplete damage. In practice, we use a combination of sand, the successful cut thin and uniform teeth. First, materials and methods 1. Instruments and cutting materials: powerful mobile phone (South Korea Ma