Dental services are categorized by type. Primary dental care refers to routine and emergency dental care for children. This includes removing and restoring teeth, as well as the structures that support them. This includes preparing the mouth for dentures, preparing the mouth for tooth extraction, and removing diseased teeth in an infected jaw. Secondary dental care pertains to conditions related to the teeth or the structures that support them. The physician who performs these services must be trained in treating children and provide them with proper diagnosis and treatment.