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.