We are the United States Dental Institute (USDI). USDI is the oldest, most diversified, broadest based, instructor-rich orthodontics program in the industry. With over thirty years of experience in forty locations, we offer the professional, serious in-depth orthodontic seminars and courses required to acquire the proficiency you need. Individual case consultations provide an integral part of our highly regarded program. Our instructors include orthodontists, pediatric, and family practitioners who teach our orthodontic seminars and courses.