Nikolaos Tzimas was born and raised in Veria. In 2014, he graduated from Dental School at the Comenius University in Bratislava, Slovakia. From 2015 to 2018 he worked as a General Dentist at a private dental practice in Drama, Greece. In 2018 he enrolled in the Endodontology Postgraduate Program at the Aristotle Univarsity of Thessaloniki Dental School, from which he graduated in 2022. From 2019, his practice is limited to Endodontics. His clinical interests include: Instrumentation of the root canal system, Non-Surgical Root Canal Retreatment and Management of Iatrogenic Errors. He is a member of the Dental Association of Imathia, the Hellenic Association Of Endodontists and the American Association of Endodontists.