The term 'Doctor of Teeth' is a job description for a Dentist. A Dentist is a medical professional who specializes in the diagnosis, treatment, and prevention of diseases and conditions of the oral cavity. They are responsible for providing preventive care, such as cleaning and fluoride treatments, as well as restorative care, such as fillings, crowns, bridges, and root canals. Dentists also perform cosmetic procedures, such as teeth whitening and veneers.