Dr. Homa Zadeh is an internationally renowned periodontist recognized for his clinical and scientific expertise. Dr. Zadeh is a Diplomate of the American Board of Periodontology and Implant Surgery. He has served as tenured associate professor, of the post-doctoral periodontology (2012 to 2019), as well as Chair of Periodontology Section (2003-2006) at USC Ostrow School of Dentistry. Dr. Zadeh graduated from the University of California Los Angeles (UCLA) with a BS degree, followed by Doctor of Dental Surgery (DDS) from USC Ostrow School of Dentistry. He completed post-doctoral clinical training in periodontology, as well as a PhD degree in immunology, at the University of Connecticut Health Center (UCHC) School of Dental Medicine and School of Medicine, respectively. Dr. Zadeh has lectured nationally and internationally in over 30 countries at prestigious conferences on topics ranging from aesthetics to minimally invasive periodontal and implant surgery, as well as tissue engineering.Dr. Zadeh served as president of the Western Society of Periodontology (WSP) in 2017, which is the largest regional periodontology society spanning the 16 western US states and Canadian provinces.Dr. Zadeh is the innovator of the VISTA technique recognized around the world as one of the most effective methods for the treatment of gingival recession. He has also innovated many concepts and devices, which have been patented and developed into products in clinical use in many countries.Dr. Zadeh has an extensive publication track, including over 100 publications in peer-reviewed journals and numerous book chapters. He serves as an editorial reviewer for many scientific journals.He served as a chartered scientific reviewer to the National Institutes of Health (NIH) and chaired a scientific panel at the NIH Center for Scientific Review. Dr. Zadeh has served as the director of USC International Periodontal and Implant Symposium. Dr. Zadeh is the recipient of many honors and awards, including outstanding teaching award and outstanding service award from USC Ostrow School of Dentistry and many research grants.He is an active member of the American Academy of Periodontology, Western Society of Periodontology (WSP), Academy of Osseointegration (AO), American Academy of Implant Dentistry (AAID), American Dental Association (ADA), California Dental Association (CDA), San Fernando Valley Dental Association (SFVDA) and Santa Barbara Ventura Dental Association (SBVDA).

Ronald Ordinola Zapata, DDS, MS, PhD, is currently an associate professor in the Endodontic Division of the University of Minnesota School of Dentistry and a Diplomate of the American Board of Endodontics. He received his master’s and doctorate degrees from the Bauru School of Dentistry at the University of Sao Paulo in Brazil. He completed his endodontic residency program at the IB Bender Endodontic Division of the Albert Einstein Medical Center in Philadelphia as well as a certificate in clinical research at the University of Minnesota’s School of Public Health. During his academic career, Dr Zapata has published over 110 manuscripts in peer-reviewed journals and has lectured in over 18 countries. 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 Professor Giovanni Zucchelli was awarded a PhD in medical biotechnology from the same university. He was a full professor of periodontology and implantology at the University of Bologna, Italy and president of the Italian Academy of Osteointegration (IAO). He currently holds the role of visiting professor at the University of Bern, Switzerland. He is an associate editor of The International Journal of Esthetic Dentistry and serves on the editorial boards for multiple other journals (eg. The International Journal of Periodontics & Restorative Dentistry, International Journal of Oral Implantology). He has received numerous awards, including the American Academy of Periodontology Foundation E. Bud Tarrson Research Award in Oral Plastic Surgery. Professor Zucchelli is an active member of the European Academy of Esthetic Dentistry (EAED), the Società Italiana di Parodontologia e Implantologia (SIdP), the Italian Academy of Osseointegration (IAO), and the European Federation of Periodontology (EFP). He is an honorary member of the American Academy of Periodontology (AAP) and received the honoris causa from the University of Buenos Aires, Argentina.

Professor Zucchelli, speaker at major Italian and international conferences, is the author of more than 160 scientific publications in the field of periodontics and implantology and the bestseller Mucogingival Esthetic Surgery published by Quintessence Publishing in 2013 and translated into 12 languages, and coauthor of two illustrated textbooks and the chapter “Mucogingival Therapy – Periodontal Plastic Surgery” in Clinical Periodontology and Implant Dentistry, published by Wiley-Blackwell in 2015. He recently released the book Mucogingival Esthetic Surgery Around Implants, published by Quintessence Publishing and already translated into eight languages.

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.