Orthognathic and OSA Plenary: Considerations in the Management of Dentofacial Disharmonies and Coexisting Obstructive Sleep Apnea

Dr Posnick is a Summa Cum Laude, Phi Beta Kappa graduate of the University of Minnesota. Educated in dentistry from Harvard University and medicine from Vanderbilt University, Dr Posnick is a diplomat of the American Board of Plastic Surgery and a diplomat of the American Board of Oral and Maxillofacial Surgery. He is a Fellow of the American College of Surgeons and the Royal College of Surgeons (Canada).

Dr Posnick has completed surgical training at Massachusetts General Hospital and Harvard University; The Children’s Hospital of Philadelphia and the University of Pennsylvania; And Vanderbilt Medical Center and University.

He began surgical practice in 1986 in Toronto, Canada where he directed the craniofacial surgery program at the Hospital for Sick Children, which is affiliated with the University of Toronto. Working with private industry beginning in the 1980’s, Dr Posnick developed and later refined internal fixation systems and medical devices that continue to be used in cranio-maxillofacial surgery worldwide.

In 1992, he was recruited to Georgetown University Medical Center where he formalized the Georgetown Craniofacial Center. In 1998, Dr Posnick continued an active private practice at the Posnick Center for Facial Plastic Surgery in the Washington D.C. area.

In 2020, Dr Posnick stepped back from his clinical practice with continued involvement in the education of students, residents in training, and clinicians in practice. Through Posnick, MD Consulting, LLC, he continues to provide advice and support to the healthcare industry and to individual patients and families as they navigate through personal healthcare challenges.

Current professional academic appointments include: Professor Emeritus, Departments of Plastic and Reconstructive Surgery and Paediatrics at Georgetown University School of Medicine in Washington, DC, Professor of Orthodontics at the University of Maryland, School of Dentistry, Baltimore, Maryland, Professor of Oral and Maxillofacial Surgery at Howard University College of Dentistry in Washington, DC., and Adjunct Professor, Department of Plastic and Reconstructive Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland.

Dr Posnick has lectured around the world and authored more than 400 medical journal publications and book chapters. His earlier two volume textbook, published in 2000 by W.B. Saunders, Craniofacial and Maxillofacial Surgery in Children and Young Adults, is considered an authoritative benchmark reference. His first edition comprehensive two volume textbook Orthognathic Surgery: Principles and Practice published in 2014 by Elsevier, captured current thinking for the evaluation and treatment of all aspects of dentofacial deformities. The second edition, published in 2022, establishes its place as a reference in setting guidelines of practice in the field. A monograph entitled Facial Deformities in Children: Thirteen Life Changing Operations written for the public was published by Elsevier in 2023. A general knowledge book, A Little about A Lot, authored by Dr Posnick was published by Wheatmark in 2024.

Killian MacCarthy DMD, MD, FACS Is currently in private practice with Oral and Maxillofacial Sugery Associates in South Portland, Maine. He has been with this group for 17 years. He joined them in 2007 after completing the Massachusetts General Hospital Oral and Maxillofacial Sugery program in Boston Massachusetts. He currently continues to practice the full scope of the specialty.

Dr. Farrell received his Doctor of Dental Surgery from the University of Iowa College of Dentistry. Dr. Farrell completed medical school in conjunction with oral and maxillofacial surgery training at Louisiana State University in New Orleans at Charity Hospital. Dr. Farrell practices with Carolinas Center for Oral and Maxillofacial Surgery in Charlotte, North Carolina and maintains a position as an Assistant Clinical Professor with Louisiana State University assisting in resident training. Dr. Farrell serves as Director of the fellowship program offered through Carolinas Center for Oral and Facial Surgery covering the broad scope of oral and maxillofacial surgery. Dr. Farrell served as a board examiner for ABOMS and has authored multiple articles, chapters and lectured nationally and internationally covering dentofacial deformities, virtual surgical planning and outpatient orthognathic surgery.

Dr. Zachary Peacock is a fellowship trained pediatric oral and maxillofacial surgeon. His clinical interests are in orthognathic surgery, pediatric obstructive sleep apnea, cleft lip and palate, and dentoalveolar surgery. His research interests include orthognathic and pediatric surgery and benign pathology of the maxillofacial region. He is a Diplomate of the American Board of Oral and Maxillofacial Surgery.

Originally from rural Michigan, Dr. Peacock completed his undergraduate work at Michigan State University before receiving his DMD from the Harvard School of Dental Medicine summa cum laude. He then received his MD degree and completed residency training in oral and maxillofacial surgery at the University of California, San Francisco. He then completed the Mass General Pediatric Oral and Maxillofacial Surgery Fellowship.

He is chair and program director of oral and maxillofacial surgery at Mass General and Harvard School of Dental Medicine. He is co-director of the Cleft and Craniofacial Center at Mass General Hospital for Children and Shriner's Hospital for Children - Boston.