上颌骨切除后,由于语言、咀嚼、吞咽等功能的要求,需用阻塞器封闭缺损区,以防止空气及液体进入鼻腔。修复体通常均需伸入鼻腔,因而增加了重量,结果导致不舒适,修复体固位差并与缺损区周围易碎组织发生摩擦接触。本文作者介绍一种用聚氨基甲酸乙酯泡沫(Polyurethane foam)作核,以减轻阻塞器重量的方法。装盒、去蜡以前的步骤与一般方法同。以后的方法如下:(1)用蜡填塞缺损区过深的倒凹,然后用一层蜡片复盖缺损区。(2)在上下层型盒的蜡片上作几个 After the maxillary resection, due to language, chewing, swallowing and other functional requirements, need to block the defect area with an occluder to prevent the air and liquid into the nasal cavity. The prosthesis usually needs to extend into the nasal cavity, thus increasing the weight, resulting in discomfort, poor retention of the prosthesis, and frictional contact with frangible tissue around the defect. The authors describe a method of using polyurethane foam as a core to reduce the weight of an occluder. Boxing, to wax the previous steps with the general method. After the method is as follows: (1) Waxed defect area with too deep undercut, and then covered with a layer of wax defect area. (2) A few on the wax of the upper and lower box