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酚醛树脂作为根充液体剂具有良好的性能,临床使用效果较好。缺点是对 X 线透射,不能在照片上显影;可引起牙变色,一般不宜用于前牙;对尖周组织有刺激性,乳牙及年轻恒牙不宜采用。1981年以来,笔者着手研究显影酚醛树脂,现将初步实验研究小结如下:显影酚醛树脂须具备的条件显影酚醛树脂除要求具备酚醛树脂应有的条件外,加入其中的造影剂应具备如下条件;
Phenolic resin as root filling liquid agent has good performance, better clinical use. The disadvantage is the X-ray transmission, can not be developed on the photo; can cause tooth discoloration, generally not suitable for the anterior teeth; punctate tissue irritation, deciduous teeth and young permanent teeth should not be used. Since 1981, I began to study the development of phenolic resin, the preliminary experimental study is summarized as follows: Development of phenolic resin shall have the conditions of development Phenolic resin in addition to the requirements of phenolic resin should have the conditions, the contrast agent added to the following conditions should be;