Regular checkups are important to catch things early. It can take 3-4 years for a cavity to be so large that you may need a root canal. By detecting cavities earlier, we can preserve as much of the tooth structure as much possible, avoid unnecessary expense for more extensive work, as well as the associated pain and discomfort.
It takes six months for a cavity to develop, so dentists prefer to see a patient every six months. If you have other conditions like diabetes, you should be seen more often because the bacteria in your mouth create proteins that make your sugar difficult to control. Oral Decay can happen in a six month period. A comprehensive dental examination also includes an oral cancer screening.