William M. Hang, DDS, MSD

William M. Hang, DDS, MSDDr. William Hang is the principal and owner of an orthodontic and dentofacial orthopedics practice for both adults and children, located in Westlake Village, California.  Dr. Hang has studied or practiced dentistry and orthodontics for more than 40 years and brings experience and dedication to a practice focused on achieving facial balance along with successful dental outcomes.

Dr. Hang’s practice is anchored in correct oral posture.  Improper oral posture, such as improper jaw, tongue, lip and cheek posture, causes poor facial balance and crooked teeth.  Reduced nasal breathing due to allergies or an airway obstruction frequently produces poor oral posture.  Consequently, Hang’s practice is focused on correcting the causes of poor oral posture, not just straightening teeth.

Dr. Hang has documented and published scholarly articles on how appropriate facial growth guidance in young children can dramatically increase the airway from the dorsum of the palate to the laryngopharynx, with clear implications on possible prevention of OSA.

He developed the Hang Expancer appliance (patent pending) as part of the Biobloc Orthotropic®  treatment and the Hang Clasp (patent pending).  Hang teaches the Biobloc Orthotropic® technique to optimize facial development for children in mini-residency sessions for orthodontists and general dentists nationally and internationally.

A specific segment of Hang’s adult practice involves patients who present to him with obstructive sleep apnea; they come to him in response to his pioneering work in re-opening orthodontic extraction spaces which gives the patient much more tongue space.  He also works with oral surgeons doing orthognathic surgery to bring both upper and lower jaws forward.

He has published multiple scholarly articles, including “Evaluation of the Posterior Airway Space Following Biobloc Therapy: Geometric Morphometrics” in the Journal of Craniomandibular Practice and “Obstructive Sleep Apnea: Dentistry’s Unique Role in Longevity Enhancement” in the Journal of the American Orthodontic Society.  Hang has served as a guest lecturer at the University of California, San Francisco, University of Southern California, the Medical College of Virginia and Harvard University.  He has lectured to a wide number of medical and dental groups including the International Association for Orthodontics, The American Academy of Craniofacial Pain, the Academy of Gnathologic Orthopedics and the International Association of Comprehensive Aesthetics.

Dr. Hang received his BS degree and his DDS degree from the University of Illinois, graduating first in his class.  He received his MSD in Orthodontics from the University of Minnesota, where he served as an Assistant Professor of Orthodontics prior to opening his private practice.  He is a member of the California Dental Association, the California Association of Orthodontists, the American Dental Association, the American Association of Orthodontists, the American Academy of Craniofacial Pain, the North American Association of Facial Orthotropics® and the International Association of Facial Growth Guidance.