Ellingsen M A, Hollender L G, Harrington G W
Department of Endodontics, University of Washington, Seattle, WA 98195, USA.
J Endod. 1995 Oct;21(10):516-20. doi: 10.1016/s0099-2399(06)80525-x.
Radiovisiography was compared clinically to conventional D-speed and E-speed radiographs viewed with X 2 magnification using the mesiobuccal root of maxillary molars of 22 patients. Clarity of size 8 and 10 endodontic file tips in relation to the radiographic apex was the object of comparison. Five images of radovisiography, (original, enhanced, negative-to-positive mode), were compared to D-speed and E-speed radiographs. D-speed radiographs were also compared to E-speed radiographs. D-speed radiographs were statistically superior to all five radiovisiography images. Four of the radiovisiography images were equivalent to E-speed radiographs. D-speed radiographs provided superior recognition of small file tips when compared to E-speed radiographs 100% of the time. Accurate identification of the small file tips was achieved on 95% of D-speed and 70% of E-speed radiographs. With radiovisiography, identification was achieved on 95% of the zoom images in the negative-to-positive mode, 86% of enhanced, 82% of standard zoom, and 77% of the images in negative-to-positive conversion.
使用22名患者上颌磨牙的近中颊根，将放射影像与使用X2放大倍数观察的传统D速和E速X线片进行临床比较。比较8号和10号根管锉尖端相对于根尖X线影像的清晰度。将放射影像的五张图像（原始图像、增强图像、负转正模式）与D速和E速X线片进行比较。D速X线片也与E速X线片进行比较。D速X线片在统计学上优于所有五张放射影像图像。四张放射影像图像与E速X线片相当。与E速X线片相比，D速X线片在100%的时间内对小锉尖的识别效果更好。在95%的D速X线片和70%的E速X线片上能够准确识别小锉尖。对于放射影像，在负转正模式下95%的缩放图像、86%的增强图像、82%的标准缩放图像以及77%的负转正转换图像上能够实现识别。
