In the mouth, tooth decay can start and progress without causing any pain or symptoms.
Taking radiographs of existing dental work on a regular basis (your dentist will decide how often), will insure that tooth decay or other abnormalities are discovered in the initial stage.
If discovered in time many initial caries can be stopped with adequate oral hygiene.
Therefore, Askyourdentist.com recommends regular dentist visits especially if you have had a lot of dental work done in the past and want to insure that this work is maintained and no new cavities are developed underneath it like this radiograph is showing.
