在锤造无缝全冠的过程中的翻制三瓣石膏阴模,以往常采用具有弹性的软塑料圈或普通橡皮管一截,但操作中,医生常感到从圈中取出石膏阴模时较困难。为此笔者研制了一种取材方便、容易制作、使用简单、易于掌握、实用性强的翻制三瓣石膏阴模的套圈。 1.制作方法: 取易拉罐铝皮。制作尺寸见图1、2,实际成形见图3。 In the process of hammering the whole crown made of stainless steel, three-dimensional plaster cast in the past, often using a flexible plastic ring or a regular rubber tube, but the operation, the doctor often felt removed from the circle More difficult. To this end, I developed a convenient, easy to make, easy to use, easy to grasp, practical three-dimensional inverted plaster cast negative ring. 1 production methods: take cans aluminum skin. Production size shown in Figure 1,2, the actual shape shown in Figure 3.