Most people think they should go to the dentist every six months. This used to be the advice but the National Institute for Health and Clinical Excellence (NICE) published new guidelines. NICE found that people need to see the dentist more or less frequently, depending on how healthy their mouth, teeth and gums are. Your dentist will decide how often they need to see you based on the condition of your mouth, teeth and gums. If you have no current problems, your dentist might not need to see you for up to two years. The same applies for children, although they should be seen at least once a year.