George Bogen, DDS, maintains an endodontic practice in Los Angeles and lectures for the postgraduate departments at the University of California, Los Angeles, Loma Linda University, and the Veteran Affairs Medical Center in Long Beach, California. A past president of the Southern California Academy of Endodontics, Bogen is also a former secretary and trustee of the American Association of Endodontists Foundation. An international lecturer and author, he serves on the scientific advisory boards for the Journal of Endodontics and International Endodontic Journal, and is a diplomate of the American Board of Endodontics. Bogen can be reached at drbogen@att.net.