While a professional dental degree, "i.e.", D.D.S. or D.M.D. is mandatory in the U.S., oral and maxillofacial surgeons may possess various doctoral degree combinations, "e.g.", D.D.S., D.M.D., D.D.S./M.D., D.M.D./M.D., D.M.D./Ph.D. or D.D.S./Ph.D. Still, it is the completion of an oral and maxillofacial residency training program and corresponding certificate of specialty training that confers surgical specialty status and board eligibility, not the surgeon's professional degree or degree combination. Analogously, it is a certificate of specialty training and board eligibility that satisfies state licensure requirements to administer general anesthesia and deep sedation, not the surgeon's professional degree or degree combination.