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Dr. Chang presented his research on Distraction Osteogenesis to an audience of over 500 Oral and Maxillofacial Surgeons at the 77th annual meeting of the American Association of Oral and Maxillofacial Surgeons. Dr. Chang and his co-researchers proved that new jaw bone growth could be achieved by applying the same principles used in Orthopedic surgery to lengthen the bones of the limbs.