Benazzi A, Cucchi G, D'Arcangelo V
Università degli Studi di Bologna.
Dent Cadmos. 1991 Apr 30;59(7):77-8.
The aim of this study is to evaluate the skin contact dose to which the patient is exposed during an endo-oral radiography using the long cone technique (paralleling technique) and the short cone technique (bisecting angle technique). Measures were taken in 50 dental X-ray units with a range of tension from 50 to 70 Kvs. Measures were taken using a calcium fluoride thermoluminescent dosimeter (CaF2:Dy). Data are expressed in uGy/mA.sec., divided in relation to the tension's values and the kind of technique used. This study reveals that the bisecting technique presents higher doses (2-3 times higher) than the long cone technique (paralleling technique).
本研究的目的是评估患者在使用长锥形技术（平行技术）和短锥形技术（分角线技术）进行口腔内放射摄影期间所接触的皮肤接触剂量。在50个牙科X射线设备中进行了测量，这些设备的电压范围为50至70千伏。使用氟化钙热释光剂量计（CaF2:Dy）进行测量。数据以微戈瑞/毫安·秒表示，并根据电压值和所使用的技术类型进行划分。本研究表明，分角线技术所产生的剂量比长锥形技术（平行技术）高（高出2至3倍）。
