Dr. Sadr has been a dentist since 2003. He received his PhD and advanced training in restorative dentistry from Tokyo Medical and Dental University in 2008. He has been actively involved in research on non-invasive and minimally invasive treatments in dentistry. He is especially interested in a new laser technology to take tooth images without using X-ray. In the past decade, he has authored over 120 scientific articles and been invited more than 30 times to lecture at various dental meetings and academic institutions across the world.