Reasons why you should visit every 6 months: PREVENT TOOTH DECAY: Dentists can quickly diagnose tooth decay. When the cavities are small, they are very easy to fix. By delaying your visit, smaller cavities will enlarge and eventually lead to Root Canal Treatment, Crowns and even We recommend a visit every six months for people in good oral health who take good care of their teeth and gums. For some, frequent visits may be necessary due to lack of oral maintenance or the need for restorative procedures.s of your teeth.