Dr. Hornbrook graduated from the UCLA School of Dentistry and maintains a private practice is San Diego, California, focused on Adult restorative and functional aesthetic dentistry. He has been a pioneer in live-patient aesthetic education and is the past founder and director of LVI, PAC~Live, the HornbrookGroup, and Clinical Mastery. He has been a guest faculty member of the aesthetic programs at SUNY Buffalo, AT Still, UOP, Case Western, Baylor, UT Houston, Roseman, and UCLA.