Potter B J, Shrout M K, Harrell J C
Department of Oral Diagnosis, Medical College of Georgia, School of Dentistry, Augusta, USA.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995 Apr;79(4):532-5. doi: 10.1016/s1079-2104(05)80141-6.
Longitudinal radiographic assessment of crestal alveolar bone plays an important role in the diagnosis and long-term evaluation of periodontal disease in patients. Because practitioners use several radiographic techniques to obtain bite-wing radiographs, horizontal and vertical alignment errors could adversely affect the diagnostic impression gained from this type of radiographic examination. The objective of this study was to determine the alignment reproducibility of three different clinical techniques used to acquire bite-wing radiographs. Patients who require bite-wing radiographs as part of a dental school screening process were radiographed with modified standard bite-wing tabs and two different intraoral positioning devices. Horizontal and vertical angular deviations were measured and alignment errors were calculated for each radiograph. The mean total angular alignment error for the standard bite-wing tab technique was 6.2 degrees, whereas the mean alignment error for both positioning devices was less than 1.8 degrees. The results of this study suggest that an intraoral positioning device for acquiring bite-wing radiographs should be used.
牙槽嵴顶骨的纵向影像学评估在患者牙周病的诊断和长期评估中起着重要作用。由于从业者使用多种影像学技术来获取咬合翼片，水平和垂直对齐误差可能会对这种影像学检查所获得的诊断印象产生不利影响。本研究的目的是确定用于获取咬合翼片的三种不同临床技术的对齐再现性。作为牙科学校筛查过程一部分需要咬合翼片的患者，使用改良的标准咬合翼片和两种不同的口内定位装置进行了X光检查。测量了每张X光片的水平和垂直角度偏差，并计算了对齐误差。标准咬合翼片技术的平均总角度对齐误差为6.2度，而两种定位装置的平均对齐误差均小于1.8度。本研究结果表明，应使用口内定位装置来获取咬合翼片。
