Investigate the Change in Facial Pain Threshold During Auricular Acupuncture in Healthy Volunteers

Background: The effects and biological mechanisms of auricular acupuncture on the human body have been increasingly observed in clinical and experimental studies, particularly the analgesic effects. Auricular acupuncture in the Shenmen, Nervous Subcortex, Jaw and Tooth groups has been shown in the Acupuncture 2 textbook of the Faculty of Traditional Medicine - University of Medicine and Pharmacy, Ho Chi Minh City and clinical studies to be effective in reducing facial pain. This study aims to examine: (1) the change in facial pain threshold when performing auricular acupuncture in the acupoints of Shenmen (TF4), Nervous Subcortex (AT4), Jaw (LO3) and Tooth (LO1) on the left ear, (2) the change in facial pain threshold when performing auricular acupuncture in the acupoints of Shenmen, Nervous Subcortex, Jaw and Tooth on the right ear and (3) examining the unfavorable effects of the procedure.