Laster A M, Pressman R S
J Am Dent Assoc. 1975 Apr;90(4):816-21. doi: 10.14219/jada.archive.1975.0153.
An electroanesthetic device exported from the Soviet Union was tested for its usefulness in controlling pain during tooth cutting procedures. Indexes to measure patient anxiety levels and predicted pain perception were designed, and their validity was tested. For the study, 170 patients were separated into subgroups who knew that an electroanesthetic device was being tested and those who did not. Results showed a greater pain reduction for those procedures that usually elict high pain levels and little benefit of anesthesia for procedures with low pain levels. The responses of the subgroup of persons who know the purpose of the device were higher than average for all pain levels.
对一台从苏联出口的电麻醉设备进行了测试，以评估其在牙齿切割手术中控制疼痛的效果。设计了用于测量患者焦虑水平和预测疼痛感知的指标，并对其有效性进行了测试。在这项研究中，170名患者被分为两组，一组知道正在测试电麻醉设备，另一组不知道。结果表明，对于通常会引起高度疼痛的手术，疼痛减轻幅度更大；而对于疼痛程度较低的手术，麻醉效果甚微。知道设备用途的那组患者在所有疼痛水平下的反应都高于平均水平。
