Professor Ahn received his Ph.D. from Kyungpook National University College of Dentistry and served as a Visiting Professor at Meharry Medical School and the University of North Carolina at Chapel Hill. He served as an Assistant Professor and Associate Professor in the Department of Oral Physiology at Kyungpook National University College of Dentistry and is currently a Professor. He is a regular member of the Korean Dental Association, Korean Physiological Society, Korean Academy of Oral Biology, Society for Korean Neurobiology, International Society for Neuroscience, and International Association for the Study of Pain. He received the 2000 Outstanding Scientists of the 21st Century, IBC, in 2001 and was listed in MARQUIS WHO'S WHO in Medicine and Healthcare (fourth and fifth editions), MARQUIS WHO'S WHO for 2 years and WHO'S WHO in the WORLD, and MARQUIS WHO'S WHO for 4 years.