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Guest Instructors

Guest Instructors have taught during course(s) at the Kois Center in the past or are scheduled to teach during course(s) at the Kois Center in the future. Please visit the “Adjunct Course Catalog” to view scheduled courses provided by some of these Guest Instructors, or the “Kois Course Catalog” to view a description of Kois Courses which may include these Guest Instructors during specific segments of the course.

Current Instructors

Dr. Christian Coachman

Dr. Christian Coachman graduated in Dental Technology in 1995 and in Dentistry at the University of São Paulo/Brazil in 2001. He is a member of The Brazilian Academy of Esthetic Dentistry and the second Brazilian to become a member of the American Academy of Esthetic Dentistry. Moreover, Dr. Coachman attended the Ceramic Specialization Program at the Ceramoart Training Center, where he also became an instructor. In 2004, Dr. Coachman was invited by Dr. Goldstein, Garber, and Salama, of Team Atlanta, to become Head Ceramist of their laboratory, a position he held for over 4 years.

Dr. Coachman worked with many leading dentists around the world as Dr. Van Dooren (Belgium), Gurel (Turkey), Fradeani (Italy), Bichacho (Israel), Ricci (Italy) and Calamita (Brazil). He currently works at his family Dental Clinic in Sao Paulo-Brazil, together with his father, uncle and brother. Dr. Coachman also works as a consultant for dental offices and companies, developing products and implementing concepts and has lectured and published internationally in the fields of esthetic dentistry, digital dentistry, dental photography, oral rehabilitation, dental ceramics and implants. He is the developer of well-known techniques as the Pink Hybrid Implant Restoration and the Digital Smile Design Concept (DSD).

Dr. John Derango

Dr. John Derango is a 1978 graduate of the University of Illinois Dental School. He is a member of the Chicago and Illinois Valley Dental Societies. He is a member of the Academy of General Dentistry and attained Fellowship Status to the AGD in 1984. Dr. Derango is a founding member of the American Academy of Cosmetic Dentistry. He received his AACD accreditation in 1986 and earned Fellowship Status in 1992. He currently serves as the president of the Chicago Academy of Cosmetic Dentistry.

Dr. Derango is a clinical instructor at the Kois Center in Seattle, Washington under the direction of Dr. John Kois.

Dr. Newton Fahl, Jr.

Dr. Newton Fahl, Jr. received his DDS degree from Londrina State University, Brazil, in 1987. In 1989 he received the Certificate in Operative Dentistry and Master of Science degree from the University of Iowa, USA.

Dr. Newton Fahl, Jr. is a member of the American Academy of Esthetic Dentistry (AAED), and founding member and past-president of the Brazilian Society of Aesthetic Dentistry (BSAD). He is a MCG-Hinman Foundation fellow. Dr. Fahl is the recipient of the American Academy of Esthetic Dentistry (AAED) 2008 President´s Award for Best Teacher and the 2011American Academy of Cosmetic Dentistry (AACD) Excellence in Cosmetic Dentistry Education Award.

Dr. Fahl has published extensively on direct and indirect bonding techniques. He is on editorial board of several peer-reviewed journals. Dr. Fahl lives in Curitiba, Brazil, where he maintains a private practice emphasizing esthetic dentistry. He is director of the Fahl Center in Curitiba, Brazil where he conducts hands-on courses on direct and indirect adhesive restorations

Dr. Jim Howard

Jim Howard received his DDS from the University of Washington in 1976 where he then completed a two year postdoctoral fellowship in the management of orofacial pain and TMJ disorders. During his 30 years of private practice he has treated over 13,000 patients on referral from dentists and physicians. Jim has published in numerous dental and medical journals and has contributed textbook chapters. Dr. Howard is the Director of the Temporomandibular Joint Disorders Clinic in the Department of Dental Medicine at Children’s Regional Medical Center in Seattle and has been involved in the management of thousands of children with idiopathic juvenile arthritis, craniofacial defects, sleep disorders and other special needs. While living in Seattle he was an Associate Professor in the Department of Orthodontics at the University of Washington School of Dentistry. Jim and his family moved to Spokane, Washington in 1996. He has continued part-time as the Chief of the TMJ disorders Clinic at Children’s Medical Center and as a Clinical Affiliate Professor at the University of Washington School of Dentistry.

Dr. Bob Margeas

Dr. Margeas graduated from the University of Iowa College of Dentistry in 1986 and completed his AEGD residency the following year. He is currently an adjunct professor in the department of Operative Dentistry at the University of Iowa. He is Board Certified by the American Board of Operative Dentistry. He is a Fellow of the Academy of General Dentistry and International Team of Oral implantologists (ITI). He has written numerous articles on esthetic and implant dentistry, and lectures and presents hands-on courses nationally and internationally on those subjects. He serves on the Editorial Advisory board of Inside Dentistry, Compendium, and is a contributing editor to Dentistry Today and Oral Health in Canada. Dr. Margeas maintains a full-time private practice focusing on comprehensive restorative and implant dentistry in Des Moines, Iowa.

Dr. Eric Rindler

Dr. Eric Rindler received his D.D.S. from the University of Texas Health Science Center in San Antonio Texas and a Certificate in Periodontics from the University of Missouri — Kansas City School of Dentistry. Dr. Rindler has held the position of Associate Professor at UTSHCSA in General Dentistry. Dr. Rindler currently maintains a full time private practice Limited to Periodontics and Dental Implants. The multi-specialty group in which he practices focuses on interdisciplinary dentistry.

Dr. Rindler has been recognized by the department of Health and Human Services for his efforts on Preventive Dentistry. Dr. Rindler lectures nationally/internationally on several topics in the field of Periodontics. Dr. Rindler is a member of several organizations including the American Academy of Periodontolgy, American Dental Association, and the Southwest Academy of Restorative Dentistry.

Dr. J. William Robbins

J. William Robbins, D.D.S., M.A., maintains a full-time private practice and is Clinical Professor in the Department of General Dentistry at the University of Texas Health Science Center at San Antonio Dental School. He graduated from the University Of Tennessee Dental School in 1973. He completed a rotating internship at the Veterans Administration Hospital in Leavenworth, Kansas and a 2-year General Practice Residency at the V.A Hospital in San Diego, California. He coauthored a textbook, Fundamentals of Operative Dentistry – A Contemporary Approach, which is published by Quintessence, and will soon be published in its 3rd edition.

He has won several awards including the Presidential Teaching Award at the University Of Texas Health Science Center, the 2002 Texas Dentist of the Year Award, and the 2003 Honorary Thaddeus V. Weclew Fellowship Award from the Academy of General Dentistry. He is a diplomat of the Federal Services Board of General Dentistry and the American Board of General Dentistry. He is a member of several organizations including the American College of Dentists, the International College of Dentists, the American Dental Association, the American Academy of Restorative Dentistry, the Southwest Academy of Restorative Dentistry, the Academy of General Dentistry, and the Academy of Operative Dentistry.


Dr. Walter F. “Jack” Turbyfill

Dr. Turbyfill graduated from the University of Louisville in 1959. He studied with Dr. Earl Pound for many years and this relationship is responsible for his keen interest in prosthodontics. Dr. Turbyfill maintains a private practice in West Columbia, South Carolina. He teaches dentists the principle of complete dentures and partials in demonstration and lecture seminars.

Dr. Turbyfill is a member of numerous dental organizations including the American Academy of Esthetic Dentistry and the American Academy of Restorative Dentistry.

Since 1984, Dr. Turbyfill has been giving seminars and lecturing at dental schools in the United States, Canada, and other international meetings. He has published articles in numerous dental publications.


Dr. Andrei Tutoveanu

Dr Andrei Tutoveanu is a dual qualified and registered Dental practitioner & Pharmacist. He graduated from the University of Sydney with a Bachelor of Dentistry, previously attaining a Masters of Pharmacy and a Bachelor of Medical Science- specialising in medicinal chemistry. With combined academic and clinical training spanning over a decade, Dr Andrei enjoys providing a high level of treatment and patient care.

Dr Andrei demonstrates proficiencies within the fields of aesthetic & implant dentistry, cosmetic & functional facial injectables and clinical pharmacotherapeutics. Dr Andrei has special interests in the areas of medicinal indications, dosage regimens, specific contraindications and side effect profiles, including ideal therapeutic combinations, within all clinical aspects of dentistry. Passionate about the health profession,?Dr Andrei Tutoveanu was actively involved with assessing and marking new graduates in their pharmacy Intern Training Program (ITP).

Currently, Dr Andrei presides on the interview selection panel for the Bachelor of Medicine/Bachelor of Surgery program, at the University of Western Sydney- which he thoroughly enjoys and continues to help select and shape the future Doctors of tomorrow.??Dr Andrei has actively been involved in establishing and launching a new and unique CPD-accredited pharmacotherapeutics program for the Australian Dental Association (ADA), targeted at both general & specialist dental practitioners of all disciplines. Excelling and committing to continuous education, Dr Andrei is a member of the American Academy of Cosmetic Dentistry (AACD) association and has undertaken numerous overseas courses, including the internationally recognised 'KOIS' prosthodontic & periodontic programs in Seattle, USA and the 'Masters Clinical program in Implant Dentistry' from the Global Institute of Dental Education (gIDE) at Universities of California (UCLA) and Loma Linda in Las Angeles, USA. Furthermore, Dr Andrei works in private practice and continues to consult with dental practitioners regarding their clinical therapeutic management of patients- both in surgical and restorative dentistry.



Uri Yarovesky, CDT

Uri Yarovesky, CDT, a ceramist, owner and President of Opus One Laboratories, Inc. and owner and President of Hilla Technologies in Agoura Hills, California is a graduate of L.A.C.C. in Dental Technology. Uri Yarovesky, was the 2011 recipient of the Inventor of The Year award by the NADL and the 2010 recipient of the Outstanding Contributions to the Art and Science of Cosmetic Dentistry award from the American Academy of Cosmetic Dentistry. Mr. Yarovesky has lectured extensively both in the United States and internationally. He is a current member of the AACD, IADFE, ASDA, NADL, CDLA, and ACE.