Sewerin I, Andersen H E, Pedersen G, Remvig P
Kobenhavns Tandlaegehojskoles.
Tandlaegebladet. 1990 May;94(7):277-9.
Two types of Kodak dental x-ray film packets are manufactured, paper-pack (PP) from paper, and poly-soft (PS) from vinyl. They differ in dimensions as PP measures 31.4 X 42.1 mm compared to PS measuring 33.0 x 44.3 mm. The edges of PP are rounded, while those of PS have welded, thin and sharp edges. Patients acceptance of the two types was tested among 25 adult patients during exposures for full mouth surveys. For each patient half PP and PS were used in a random sequence. The patients were asked to rate any feeling of discomfort or pain and to compare the feeling after each pair of film packets. The scores were compared by Wilcoxon's matched-pairs signed-ranks test. The results revealed with a statistical significance at the 1% level, that the patients felt more discomfort when the poly-soft packet was used. No affections of image quality were noticed. In spite of the higher level of discomfort resulting from the use of PS it seems justified to recommend this type due to its superior hygienic qualities.
柯达生产两种牙科X光胶片包，一种是纸质包装（PP）的纸质胶片包，另一种是乙烯基材质的聚软包装（PS）胶片包。它们尺寸不同，PP尺寸为31.4×42.1毫米，而PS尺寸为33.0×44.3毫米。PP的边缘是圆的，而PS的边缘是焊接的，薄且锋利。在对25名成年患者进行全口检查曝光期间，测试了他们对这两种类型胶片包的接受程度。对每位患者，以随机顺序使用一半PP和一半PS胶片包。要求患者对任何不适或疼痛的感觉进行评分，并比较每对胶片包使用后的感觉。通过威尔科克森配对符号秩检验对分数进行比较。结果显示，在1%的显著水平上，患者使用聚软包装胶片包时感觉更不适。未发现图像质量受到影响。尽管使用PS会导致更高程度的不适，但由于其卓越的卫生品质，推荐这种类型似乎是合理的。
