锥形束CT在早期诊断牙根纵裂中的应用效果观察

目的：观察锥形束CT（ CBCT）在对牙根纵裂早期临床诊断中的应用。方法：回顾性分析2011年8月至2012年2月在我院口腔科诊治的72例可疑牙根纵裂患者病例，对比研究CBCT与曲面体层片（OPG）检查结果。结果：CBCT 检查结果正确率为86．1％；OPG 检查结果正确率为37．5％， CBCT检查结果正确率明显高于OPG（X2＝6．734，P＜0．01）；组间比较CBCT检查纵折部位正确率明显高于OPG（X2＝6．271，P＜0．01），有统计学意义。结论：CBCT影像学检查能明确诊断出牙根纵裂及其纵折部位，对做出早期诊断具有重要意义。

The Effect on Cone Beam CT Used in the Early Diagnosis of Vertical Root Fracture

Objective：To observe the effect of cone beam CT （CBCT） on early diagnosis of vertical root fracture .Method：72 cases of patients suspected of vertical root fracture treated in our hospital were retro-spectively analyzed from Aug.2011 to Feb.2012, the results of the examination of CBCT and orthopanto-mography （OPG） were compared and studied .Result：The correct rate of the CBCT findings was 86.1%;the correct rate of OPG examination results was 37 .5%, the findings of CBCT was significantly higher than the OPG （X2=6.734, P〈0.01）;Comparison between groups, CBCT longitudinal fracture position accuracy was higher than that of OPG （X2=6.271, P〈0.01）, there was statistical significance.Conclusion：CBCT imaging can clearly diagnose vertical root fracture and vertical fracture site, it is important for making an ear-ly diagnosis.