According to the Senior Dentist at the Charletown Health Clinic, Hemalatha Aravind, visiting a dentist every six months enables the dentist to treat cavities and gum diseases early enough in order to avoid tooth loss. 

She explained that cavity occurs when plaque (a sticky substance that focuses on the teeth) combines with the sugars and starches of the food we eat, and this combination produces acids that attacks tooth enamels.   

She also said the best way to prevent cavity is by brushing your teeth twice daily, flossing daily and going for regular check-ups; adding eating healthy foods and avoiding snacks and drinks that are high in sugar are ways that could prevent cavity.