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Dental schooling to become an oral surgeon will take an additional four years, during which time dental students complete coursework and treat patients in a supervised setting; to become licensed as an oral surgeon, most states require passing a written and practical examination.
Dental school takes four years, including class and clinical work, and typically leads to the Doctor of Dental Surgery degree, or D.D.S. The first two years, students take classes in human anatomy, oral anatomy, pathology, physiology, microbiology and pharmacology.