Dr. Christian Leonhardt is an alumnus of Würzburg University College of Dentistry, where he laid the foundation for his distinguished career. Post-graduation, he pursued diverse curricula and master's programs across Germany, Europe and the U.S., including a notable Master of Science in Orthodontics from Danube University. Widely recognized as a specialist in Prosthodontics, Dr. Leonhardt places great emphasis on continuous education, regularly attending lectures and conferences to stay abreast of the latest advancements in dentistry. Operating a comprehensive practice in Augsburg, Dr. Leonhardt offers a full spectrum of dental services, reflecting his commitment to providing comprehensive care to his patients. Additionally, his practice serves as a teaching practice- affiliated with DTMD University in Luxembourg, highlighting his dedication to academic collaboration. Dr. Leonhardt's involvement as both a graduate and mentor at the Kois Center is a testament to his passion for sharing knowledge and promoting evidence-based teaching methodologies within the dental community. His understated yet profound impact on the field is evident in his dedication to advancing professional standards and fostering ongoing learning among his peers.

After completing his basic training as a dental technician, Peter Lerch opted for professional residencies and further training at home and abroad. In 1988/89 he completed his training as a prosthodontist at the University of Zurich. He worked as a consultant in his institute and is a lecturer in prosthetics and functional analysis. He is also active as a speaker at home and abroad. He is credited with various noteworthy professional publications and video productions. His self-developed treatment concept, the Lerch Concept, is known worldwide and is constantly being refined. In addition, he is and has been involved in various developments such as the CONCEPTOR Alpha (first device to simulate mandibular movement), the SOLUTION ceramic anterior tooth (ENTA) and preciform d (bredent) (impression instrument). In 1994 he founded the I.S.P. Individual System Prothetik AG and later, founded and took over the management of the Institute for Functional Analysis and Prosthetics. These days he deals with, patient consultations, functional analysis and the resulting therapeutic consequences. He is passively involved in the following associations: DGZMK, DGFDT and AKPP.

Dr Alice Li earned her DMD degree from Harvard School of Dental Medicine in 2023. As a student, she helped create My Dental Key, an online platform that aims to enhance dental education worldwide. Dr Li combined her interest in endodontics with her artistic skills to illustrate for this textbook, and she is currently pursuing her certificate in endodontics at Harvard School of Dental Medicine. In her free time, Dr Li enjoys hiking, camping, playing board games, finding new creative hobbies, and trying different cuisines in and around Boston.

Director of Predoctoral Endodontics
Department of Restorative Dentistry and Biomaterials Sciences
Harvard School of Dental Medicine

Clinical Associate, Department of Sugery
Division of Dentistry
Massachusetts General Hospital
Boston, Massachusetts

Dr. Tomas Linkevicius has received DDS degree in 2000 in Kaunas University, Lithuania. In 2004 he finished post-graduate program in prosthodontics in Vilnius University. In 2009 he has defended theses “The influence of mucosal tissue thickness on crestal bone stability around dental implants” and received PhD degree in Riga Stradins University, Latvia. Currently, dr. Tomas Linkevicius serves as Assoc. Professor in Institute of Odontology, Vilnius University. He also works in private practice “Vilnius Implantology Center” and is a founder of private research center “Vilnius Research Group”. Dr. Tomas Linkevicius serves as a reviewer in dental journals, like “International Journal of Oral and Maxillofacial Implants”, “Journal of Periodontology”, “Clinical Implant Dentistry and Related Research” and “Journal of Clinical Periodontology”. He is the author and co-author of many articles in international journals, indexed in PubMed.

Master of Stomatology, Attending
Member of the European Association for Osseointegration (EAO), Member of the Boucharde Medical Team

Dr Liu has served as an outpatient director at many top dental institutions in China. He regularly lectures in Europe, America, Singapore, Hong Kong, China, and Macau, as well as teaching technical training internationally. His interests include high-resolution microsopy, implants in the esthetic area, immediate implantation, guided bone regeneration, soft tissue transplantation, maxillary sinus elevation, Allon-4, esthetic restoration, porcelain veneer and minimally invasive prosthetic procedures, and secondary restoration of failed cases.

Dr. Stanley Y.C. Liu, a distinguished Associate Professor renowned in the fields of Otolaryngology and Plastic and Reconstructive Surgery at Stanford University School of Medicine. In addition to his esteemed roles, Dr. Liu serves as the director of the Stanford Sleep Surgery Fellowship, mentoring aspiring professionals, and guides as a preceptor to the Stanford Oculoplastic Surgery Fellowship, shaping the next generation of specialists. Notably, he is a respected Stanford Biodesign Faculty Fellow Alumnus, reflecting his commitment to innovative medical advancements. Dr. Liu is at the forefront of sleep apnea surgery, offering expertise in a comprehensive range of procedures, from nasal to maxillomandibular advancement (MMA), including pioneering techniques such as adult maxillary expansion (DOME), which he developed alongside Professor Christian Guilleminault in 2015. Continuously refining the sleep surgery protocol at Stanford, Dr. Liu's dedication to enhancing patient outcomes is evident. His research endeavors encompass diverse areas, from clinical phenotyping to optimize sleep surgery outcomes to virtual surgical planning for facial skeletal surgery and neuromodulation of the upper airway, demonstrating his multifaceted approach to advancing medical knowledge. A sought-after speaker, Dr. Liu has delivered keynote addresses both nationally and internationally at prestigious conferences spanning various specialties. His contribution to scientific literature is extensive, with over 100 published articles and medical texts, highlighting his significant impact on the field of sleep surgery with original scientific insights. In summary, Dr. Stanley Y.C. Liu's illustrious career is marked by a tireless commitment to excellence in patient care, education, and research, positioning him as a leading authority in Otolaryngology and Plastic and Reconstructive Surgery.

Prof. Dr. Frank Lobbezoo, MSc, PhD, specialist in functional diagnostics and therapy of orofacial pain, Head of the Department of Orofacial Pain and Dysfunction, Academic Center for Dental Medicine Amsterdam (ACTA), Amsterdam/Netherlands

Ignazio Loi, DDS, MD, graduated in medicine and surgery before specializing in dentistry and prosthodontics at the University of Cagliari, Italy. He is a member of the Associazione Italiana Ospedalità Privata (AIOP) and an honorary member of the Advanced Implantology Study Group (AISG). Dr Loi maintains a private practice in Cagliari, Italy.

Bruno Loos is professor emeritus in periodontology at the Academic Centre for Dentistry Amsterdam (ACTA). Until 2020, he was chairman of the Department of Periodontology. In the period 2019-2022, he held the position of Director of Research and Vice Dean at ACTA. He is director of the EFP-accredited postgraduate course in Periodontology and Implant Dentistry. Loos is involved in research questions in the field of immunobiology of periodontal and peri-implant diseases and investigates the relationship between oral health and general health, a.k.a. periodontal medicine. In 2021, Loos received the Distinguished Scientist Award for Research in Periodontal Disease from the International Association of Dental Research (IADR). Loos is honorary member of the Dutch Society of Periodontology.