A tooth surgeon, also known as a dentist, is a medical professional who specializes in the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity. They are responsible for providing preventive care, such as regular check-ups and cleanings, as well as diagnosing and treating any issues that may arise. They also perform surgical procedures, such as root canals, extractions, and implants. Dentists must complete a four-year doctoral program in order to practice.