Does every decayed tooth/cavity need treatment?
If left untreated, a cavity would continue to enlarge in size (both width and depth). In time, bacteria will reach the tooth pulp causing toothache and infection. A cavity has to be filled in the initial stages to preserve the remaining healthy tooth and prevent complications. If left untreated, a root canal treatment may become necessary to save the tooth, or in rare cases, the tooth may have to be extracted.
