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目的评价分析三种方法测量根管工作长度的准确性。方法随机将132例患者共180颗患牙分为三组,分别用手感法、插针X线法和Propex电测法测量其根管工作长度,比较其准确性。结果手感法,插针X线法与propex电测法的准确性分别为70%、88%和93%,手感法与插针X线法差异有统计学意义(P<0.05),插针X线法与propex电测法差异无统计学意义(P>0.05),手感法和propex电测法差异有统计学意义(P<0.01)。结论 propex电测法准确可靠,患者受辐射少,值得推广。
Objective To evaluate and analyze the accuracy of three methods for measuring the working length of root canal. Methods A total of 180 teeth of 132 patients were randomly divided into three groups. The working length of the root canal was measured by the method of touch, pin X-ray and Propex respectively. The accuracy of the method was compared. Results The sensitivities of sensation of touch, X - ray and propex were 70%, 88% and 93%, respectively. There was a significant difference between X - ray and touch methods (P <0.05) There was no significant difference between line method and propex method (P> 0.05). There was significant difference between touch method and propex method (P <0.01). Conclusion Propex electrical measurement method is accurate and reliable, the patient receives less radiation, it is worth promoting.