Tantanapornkul Weeraya, Okouchi Kiyoshi, Fujiwara Yoshikuni, Yamashiro Masashi, Maruoka Yutaka, Ohbayashi Naoto, Kurabayashi Tohru
Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Feb;103(2):253-9. doi: 10.1016/j.tripleo.2006.06.060. Epub 2006 Sep 1.
To evaluate the diagnostic accuracy of cone-beam CT compared with panoramic images in predicting neurovascular bundle exposure during extraction of impacted mandibular third molars.
Cone-beam CT and panoramic images of 142 impacted mandibular third molars were prospectively evaluated to assess tooth relationship to the mandibular canal. These interpretations were then correlated with intraoperative findings. The sensitivity and specificity of the 2 modalities in predicting neurovascular bundle exposure at extraction were calculated and compared. The diagnostic criterion for panoramic images was defined using multivariate logistic regression analysis.
In predicting the exposure, the sensitivity and specificity were 93% and 77% for cone-beam CT, and 70% and 63% for panoramic images, respectively. Cone-beam CT was significantly superior to panoramic images in both sensitivity and specificity.
Cone-beam CT was significantly superior to panoramic images in predicting neurovascular bundle exposure during extraction of impacted mandibular third molar teeth.
评估锥形束CT与全景图像在预测下颌阻生第三磨牙拔除术中神经血管束暴露方面的诊断准确性。
前瞻性评估142颗下颌阻生第三磨牙的锥形束CT和全景图像，以评估牙齿与下颌管的关系。然后将这些解读结果与术中发现进行对比。计算并比较两种检查方式在预测拔牙时神经血管束暴露方面的敏感性和特异性。使用多变量逻辑回归分析确定全景图像的诊断标准。
在预测暴露情况时，锥形束CT的敏感性和特异性分别为93%和77%，全景图像的敏感性和特异性分别为70%和63%。锥形束CT在敏感性和特异性方面均显著优于全景图像。
在预测下颌阻生第三磨牙拔除术中神经血管束暴露方面，锥形束CT显著优于全景图像。
