Jensen T W
J Dent Educ. 1978 Aug;42(8):481-5.
Demands on dental practitioners for documentation of patient needs plus evidence of high rates of inadequate radiographs in teaching and practice reveal a need for accurate, simplified radiographic techniques. New procedures using X-ray beam-guiding instruments were used for all periapical films in a clinical teaching program. Data collected over two years showed a high procedural reliability with these instruments. The film quality and low retake rate may have been due to the beam-guiding effect that also assures minimum patient exposure to radiation. Since beam-guiding instruments may also reduce the time expenditure in teaching and practice, the proposed procedures may be able to provide better radiography for less expense.
对牙科从业者记录患者需求的要求，以及教学和实践中存在的大量X光片不合格率的证据，表明需要准确、简化的X光摄影技术。在一个临床教学项目中，使用X射线束引导仪器的新程序被用于所有根尖片。两年多收集的数据显示，这些仪器具有很高的操作可靠性。胶片质量和低重拍率可能是由于束引导效应，这也确保了患者接受的辐射最小化。由于束引导仪器还可以减少教学和实践中的时间消耗，因此所提出的程序可能能够以更低的成本提供更好的X光摄影。
