Ronald Ordinola Zapata, DDS, MS, PhD, is currently an associate professor of endodontics at the University of Minnesota School of Dentistry. He earned his DDS degree from Inca Garcilaso de la Vega University in Lima, Peru, before pursuing advanced training in endodontics at the University of Sao Paulo, Brazil. In 2014 he moved to the United States to continue this endodontic training, completing a 2-year advanced education in general dentistry at Larkin Community Hospital in Miami and an endodontic residency program at the IB Bender Endodontic Division of the Albert Einstein Medical Center in Philadelphia. Dr Zapata has published over 70 scientific papers and lectures internationally. He also serves at the associate editor of the International Endodontic Journal and is a member of the scientific advisory committee for the Journal of Endodontics.

He received his dental degree from the Faculty of Dentistry at Semmelweis University, Budapest (Hungary). Upon his graduation, Maciej pursued a Doctor of Medical Sciences title, obtained after pass with honors for his dissertation defense on composite inlays-onlays in the restoration of endodontically treated teeth. Maciej has been a long-time researcher and lecturer, working with dental students at the Department of Propedeutics of Conservative Dentistry of CMUJ, Krakow. During his International Association of Dental Research scholarship, he conducted research work on adhesive bridges (FDPs) as well as the restoration of endodontically treated teeth at the universities of Leeds and Manchester. He has been a visiting professor at the University of Chieti (Italy), and visiting lecturer the UIC University (Barcelona). In 2021 he became a mentor at the prestigious Kois Center in Seattle. In 1999 Maciej established his private practice “Dentist” in Krakow and maintains it with his energetic attitude and everlasting passion. Maciej takes pride in being Editor-in-Chief of the Quintessence for Dentists journal. His book, EndoProsthodontics: A Guide for Clinical Practice, has achieved success and is now published in English, Chinese, Croatian, French, and Russian. He has authored more than 80 scientific papers in both national and international journals. Maciej is also an active member in the Italian restorative dentistry research group “Style Italiano,” as well as the Polish Academy of Esthetic Dentistry. In 2019 he became a certified member of European Society of Cosmetic Dentistry.

Doctor of Stomatology (Center of Periodontology)
Periodontist, graduated from and Attending at Peking University School and Hospital of Stomatology
Member of the European Association for Osseointegration (EAO), Member of the Periodontology Committee of the Chinese Stomatological Association

Fachärztin für Augenheilkunde

Graduated in 1988 with a degree in dentistry from the University of Bologna, Italy. He was awarded a PhD in medical biotechnology from the same university. Professor of periodontology at the University of Bologna, Italy. Head of the Department of Periodontology and Dental Hygiene at the University of Bologna, Italy. Coordinator of the degree course in Dental Hygiene at the University of Bologna, Italy. Honorary member of the American Academy of Periodontology (AAP). President of the Italian Academy of Osseointegration (IAO). Member of the editorial boards of the International Journal of Periodontics and Restorative Dentistry, the Journal of Periodontology, and the International Journal of Oral Implantology. Associate editor of the International Journal of Esthetic Dentistry. Active member of the European Academy of Esthetic Dentistry (EAED), the Italian Society of Periodontology (SIdP), the Italian Academy of Osseointegration (IAO), and the European Federation of Periodontology (EFP). Author of more than 130 scientific publications in the field of periodontics and implantology. Winner of various awards in Europe and the United States for scientific research in the field of periodontology. Co-author of two illustrated textbooks on periodontal plastic surgery (Ed. Martina) and of the chapter “Mucogingival Therapy—Periodontal Plastic Surgery” in Clinical Periodontology and Implant Dentistry (Lindhe J, Lang NP, Karring T [eds]; Wiley-Blackwell). Author of the book Mucogingival Esthetic Surgery, published by Quintessence Publishing and translated into 12 languages. Speaker at major Italian and international conferences on the topics of periodontics and implantology.

Internationally renowned for his achievements in the fields of periodontal and peri-implant diseases as well as esthetic periodontal soft tissue corrections, Dr. Zuhr is one of the world's leading oral surgeons. Together with Prof. Dr. Hürzeler, he wrote a specialist book in 2011 which, according to his colleagues, is "without doubt one of the most important oral surgery publications of recent years and a must-read for every periodontist and implantologist." Dr. Zuhr studied dentistry in Aachen and in the USA. He is a specialist in Periodontology and has been a board member of the German Society of Periodontology since 2007.