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用测量牙齿根尖孔至口腔粘膜之间阻抗来确定根管长度的方法,称为根管长度电测法。国外现已有多种根管长度电测仪(Endodontic Meter、Root Canal Meter)在临床使用。1981年,第四军医大学口腔系等单位试制成GC—1型根管长度电测器在临床试用,取得一定效果。不久,他们又继续改进,研制成KGC—1型根管长度电测
The method of determining the root canal length by measuring the impedance between the apical foramen of the tooth and the oral mucosa is called the root canal length electric measurement method. Abroad, there are many kinds of Rootodimetric Meter (Root Canal Meter) in clinical use. In 1981, Fourth Military Medical University Department of Stomatology and other units made of GC-1-type root canal length of the detector in clinical trials, and achieved some results. Soon, they continue to improve, developed KGC-1-type root canal length electrical measurements