Dr. Donald R Mehlisch, received a Doctor of Dental Surgery (DDS) degree from the University of Iowa, College of Dentistry and a Doctor of Medicine (MD) from the University of Minnesota, College of Medicine. He performed his residency in Oral and Maxillofacial Surgery at Johns Hopkins Hospital in Baltimore, Maryland and received a Master of Science in Oral and Maxillofacial Surgery following a Fellowship at the Mayo Clinic in Rochester, Minnesota. Dr. Mehlisch has held positions as an Associate Professor, College of Dentistry, University of Minnesota, Adjunct Professor, Department of Oral and Maxillofacial Surgery, the University of Texas Dental Branch in Houston, Texas and Clinical Professor, Department of Oral and Maxillofacial Surgery, College of Dentistry, Baylor University in Dallas, Texas. A Diplomat of several medical and dental boards he has published over 50 articles and book chapters and participated in more than 425 clinical research trials as an investigator, medical monitor, project manager, or consultant. His primary research interests have been in all disciples of acute and chronic pain. Dr. Mehlisch has lectured in 36 countries and participated in a number of medical outreach programs to Haiti and Central America. During his 40 years of clinical research experience he has served on the Scientific and Medical Advisory Boards of 15 companies and participated in numerous pharmaceutical and medical device presentations at the Food and Drug Administration (FDA). He remains active as a Consultant to pharmaceutical companies in the United States and Europe.