Dr. Buchanan received his dental degree in 1978 from the University of the Pacific Arthur A. Dugoni School of Dentistry in San Francisco. In 1980, he completed the endodontic graduate program at Temple University in Philadelphia. He began pursuing 3-D anatomy research early in his career. In 1989, he established Dental Education Laboratories, a state-of-the-art training facility devoted to hands-on instruction where he still teaches endodontic treatment, retreatment and segmented file retrieval. Early in his career, Buchanan identified the power of video and film media in training and produced the award-winning video series, The art of endodontics. Buchanan also holds a number of patents for dental instruments and techniques. Most notably, he was the first dentist to introduce variable-tapered instruments in endodontic therapy and pioneered a system-based approach to treating root canals. Buchanan is a diplomate of the American Board of Endodontics and a fellow of the International and American College of Dentists. He currently serves as a clinical guest professor at the Herman Ostrow School of Dentistry of the University of California and the University of California Los Angeles School of Dentistry and as a guest lecturer at Loma Linda University School of Dentistry. He maintains a full-time private practice limited to endodontics and implantology in Santa Barbara, California.