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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.
Training for surgeons typically takes a minimum of 13 years, and can be longer for surgeons who specialize. For general surgeons, training includes two four-year degrees and an additional five years or more in residency.