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目的:分析比较偏位投照与锥形束CT(CBCT)在根管治疗中发现遗漏根管的应用。方法:对200例患牙常规拍摄术前正位根尖片和CBCT,术中插诊断丝拍摄20°~30°偏位投照根尖片,完善根管治疗。比较偏位投照与CBCT发现的遗漏根管数,采用SPSS 19.0软件包对数据进行统计学分析。结果:200例患牙中,偏位投照发现8例患牙有遗漏根管,前牙及前磨牙3例,磨牙5例。而CBCT扫描显示有15例,其中,前牙及前磨牙4例,磨牙11例。CBCT发现数量大于偏位投照,但差异无显著性(P>0.05)。结论:偏位投照与CBCT有利于发现遗漏根管,帮助临床完善根管治疗。
OBJECTIVE: To analyze and compare the application of misaligned root canal and root canal therapy with cone beam computed tomography (CBCT). Methods: 200 cases of preoperative orthodontic radiographs and CBCT were routinely taken, and radiofrequency radiographs of 20 ° ~ 30 ° were taken during the operation to improve root canal therapy. Comparison of partial projection and CBCT found missing root canal number, using SPSS 19.0 software package for statistical analysis of the data. Results: In 200 cases of teeth, the deviated position found 8 cases of missing teeth root canal, anterior teeth and premolar in 3 cases, molars in 5 cases. The CBCT scan showed 15 cases, of which 4 cases of anterior teeth and premolar, molars in 11 cases. The number of CBCT was greater than the deviation of projection, but the difference was not significant (P> 0.05). CONCLUSIONS: Offset projection and CBCT are helpful to find the missing root canal and help to perfect the root canal therapy.