Teplitsky P E, Rayner D, Chin I, Markowsky R
College of Dentistry, University of Saskatchewan, Saskatoon.
J Can Dent Assoc. 1992 Jan;58(1):53-8.
Two studies were performed in order to test the efficiency of GPX rotary instrumentation in removing gutta percha from endodontically-treated extracted teeth. A pilot project compared GPX to gates glidden instrumentation, and then a GPX technique was performed on 60 obturated mesial canals of mandibular molars. Assessment of the technique included radiographic and microscopic analysis of remaining debris. Results indicated that the GPX is a useful adjunct in these retreatment procedures. The clinical technique and time involved in the use of the GPX are discussed.
进行了两项研究，以测试GPX旋转器械从根管治疗后的拔除牙齿中去除牙胶的效率。一个试点项目将GPX与盖茨扩孔钻器械进行了比较，然后对60颗下颌磨牙的近中根管进行了GPX技术操作。对该技术的评估包括对残留碎屑的影像学和显微镜分析。结果表明，GPX在这些再治疗程序中是一种有用的辅助工具。文中讨论了GPX的临床技术及使用所需时间。
