Ideally, dental checkups are performed every six months. On your first visit to the dentist, they will ask for a full health history to gain an understanding of your past and current health. From there, regular dental checkups will be used to determine any change in your oral health and keep your teeth and mouth in good shape or maintained appropriately.
The American Dental Association, and most dentists, recommend six months because the maintenance and cleaning provided at each visit is the best way to ensure you maintain healthy teeth and gums.
As long as your mouth is free of gum disease and heavy buildup, six months is about the average length of time for tartar and stain to accumulate to the point of needing another teeth cleaning. For individuals with a history of periodontitis, those maintenance visits may need to be as frequent as every 3-4 months.