摘要
目的 :研究数字化牙片X线摄影技术及其临床应用价值。方法 :采用SIRONA数字化牙片机设备 ,对 2 0 0例患者的 2 5 6颗牙齿行根尖片拍摄。结果 :与根尖片传统摄影比较 ,投照时垂直角度要不同程度加大 ,曝光时间缩短 87%～95 %。质量分级 :甲级片 2 2 9张 ,乙级片 19张 ,丙级片 8张。结论 :数字化牙片X线摄影技术具有传统根尖片摄影技术所不具备的优越性 ,在口腔临床及科研工作方面有良好的应用前景。
Objective:To investigate the digital dental radiographic technique and its clinical application.Methods:256 dental films were taken in 200 patients with the SIRONA digital dental system.Results:The vertical angle must be increased in varying degrees when taking dental film,the CCD was used instead of the films and exposure time was shortened 87%～95%.Conclusion:The digital dental film system has more advantages than the conventional dental radiographic technique and it can be a new trend in the oral clinics and research works.
出处
《放射学实践》
2004年第11期801-802,共2页
Radiologic Practice
关键词
数字化牙片
X线摄影术
图像质量
Digital dental film
Radiographic technique
Image quality
