Reopening of a school of dentistry in the era of COVID-19 pandemic, "Step-by-step" approach.

Introduction: The COVID-19 pandemic has a great impact on all aspects of higher education worldwide. In Iran, after several months of lockdown, all dental schools coped with the challenge of "reopening." School of Dentistry of Tehran University of Medical Sciences (TUMS) planned to facilitate the process of reopening using a "step-by-step" approach.