The most common reason a tooth needs restorative work is decay. A filling restores the tooth where the decay was present. Cavities almost always get bigger and can cause pain if left untreated. Once this happens, it will likely require more extensive and expensive treatment. If we can catch the decay early, a filling is an easy way to treat the problem.
If you have a cavity and it needs a restoration, there are different kinds of materials that may be used to restore the functionality of the tooth. The decay is removed and the tooth colored filling will be placed.