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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.
An endodontist has at least two years of extra education in diagnosis and root canal treatment, including apicoectomies. Oral and maxillofacial surgeons are dentists who have an extra four to six years of training in surgery. Before the surgery, your dentist may take more X-rays of the tooth and surrounding bone.