Pushkar Mehra, BDS, DMD, MS, FACS, is Professor and Chairman of the Department of Oral & Maxillofacial Surgery, Boston University Goldman School of Dental Medicine, Boston, MA. He is a Diplomate of the American Board of Oral and Maxillofacial Surgery and a Fellow of the American Association of Oral and Maxillofacial Surgeons, the American Academy of Craniomaxillofacial Surgeons, the International Association of Oral and Maxillofacial Surgeons, the American College of Surgeons, and the American College of Oral and Maxillofacial Surgeons. Dr. Mehra is the editor of two textbooks on Oral and Maxillofacial Surgery and author of more than 60 articles in referenced publications as well as many book chapters. He has received numerous honors and awards and is frequently invited as a speaker all over the world to present his research and clinical outcomes. He has appeared in Who’s Who in America each year since 2005. Dr. Mehra's clinical practice focuses on complex facial reconstruction including orthognathic, TMJ and esthetic surgery.  Larry M. Wolford, DMD, has enormous experience in the field of oral and maxillofacial surgery. He has been Clinical Professor of Oral and Maxillofacial Surgery at Texas A&M University College of Dentistry, Dallas, TX since 1987 and in 2013 was also appointed Clinical Professor in the Department of Orthodontics. He is a Diplomate of the American Board of Oral and Maxillofacial Surgery, a Fellow of the American Association of Oral and Maxillofacial Surgeons, the American Academy of Craniomaxillofacial Surgeons, the International Association of Oral and Maxillofacial Surgeons, and the American College of Oral and Maxillofacial Surgeons. Dr. Wolford has received numerous awards and honors. He has served on many professional committees and is Immediate Past President of the American Society of Temporomandibular Joint Surgeons (2017–2019). He has been a keynote speaker and delivered memorial lectures around the world. Dr. Wolford sits on the editorial boards of various journals and acts as an editorial consultant to many more. He is the co-author of several books, written more than 45 chapters for other books, and more than 225 articles in refereed journals.