Tammisalo T, Vähätalo K, Luostarinen T, Leimola-Virtanen R, Tammisalo E H
Department of Oral Radiology, Institute of Dentistry, University of Turku, Finland.
Dentomaxillofac Radiol. 1994 May;23(2):97-101. doi: 10.1259/dmfr.23.2.7835510.
The diagnostic performance of the detailed narrow-beam (DNB) technique of the Scanora multimodal X-ray system was compared with periapical radiography for detecting periodontal pathology. In total, 253 sites in 133 patients were examined. Receiver operating characteristics (ROC) of both imaging modalities were analyzed in relation to the ratings of five observers for the whole dentition, three dental regions and five types of periodontal lesion. ROC analysis demonstrated that the overall diagnostic performance of DNB radiography was better (P < 0.05) than that of periapical radiography. DNB radiography was significantly superior (P < 0.01) for detecting marginal widening of periodontal membrane space, but there was no significant difference between the two techniques for crestal erosion, vertical bone loss, furcation involvement or calculus. The regional differences found in overall diagnostic performance of the two imaging modalities were not significant. The sensitivity for periapical radiography was 71% and for DNB radiography 85%, and the specificities 82% and 81% respectively. It is concluded that DNB radiography is a good radiographic examination for periodontal disease, and an acceptable alternative to periapical radiography.
将Scanora多模式X射线系统的详细窄束（DNB）技术的诊断性能与根尖片在检测牙周病变方面进行了比较。总共检查了133名患者的253个部位。根据五名观察者对全口牙列、三个牙区和五种牙周病变类型的评级，分析了两种成像方式的受试者工作特征（ROC）。ROC分析表明，DNB造影的总体诊断性能优于根尖片（P < 0.05）。DNB造影在检测牙周膜间隙边缘增宽方面明显更优（P < 0.01），但在牙槽嵴吸收、垂直骨吸收、根分叉病变或牙结石方面，两种技术之间没有显著差异。两种成像方式在总体诊断性能上发现的区域差异不显著。根尖片的敏感性为71%，DNB造影为85%，特异性分别为82%和81%。结论是，DNB造影是一种用于牙周疾病的良好影像学检查方法，是根尖片的可接受替代方法。
