Dr. Hugo Sousa Dias graduated with a DDS from University Fernando Pessoa, Porto, Portugal, and completed the postgraduate program in endodontics at the University of Lisbon, Portugal. Besides running a practice limited to endodontics in Porto, he is Director of the Master in Endodontics clinical residency program at Foramen Dental Education. Dr. Dias is the founder of the Portuguese Group for Endodontic Study (study club). He is a member of the European Society of Endodontology and the Sociedade Portuguesa de Endodontologia [Portuguese endodontic society]. He has given more than 20 lectures around the world and is co-author of a chapter in the book The Root Canal Anatomy in Permanent Dentition(Springer, 2018).