William Harrison Bell dating history

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William Harrison Bell (March 28, 1927 – June 1, 2016) was an American Oral and Maxillofacial Surgeon and a Professor of Surgery who is known for his contributions to the field of Orthognathic Surgery. Dr. Bell's groundbreaking research provided a biologic basis for the Le Fort I osteotomy and other orthognathic surgical procedures used to reposition the facial skeleton. Active throughout his life, his later work provided a biologic rationale for distraction osteogenesis of the facial skeleton, a technique used to gradually lengthen bone at a rate of 1mm a day. A prolific author, his publications provided a thorough description of the diagnosis and management of dentofacial deformity, surgical technique, and detailed figures that illustrated the operations in sufficient detail that would provide generations of surgeons the necessary information from which to apply a surgical-orthodontic approach to facial deformity. He is credited in the United States with pioneering the transition of the field of Oral Surgery to become Oral and Maxillofacial Surgery.