Dental fillings can last for many years, depending on the type of filling and your level of maintenance. When a filling wears out, the gap may allow bacteria to accumulate and cause another decay.
Some common signs that a dental filling needs to be replaced include:
You feel or notice chips and cracks in the filling
You experience toothaches
You feel sensitivity or pain when you drink sweet, cold or hot food and beverages
The filling has changed colour
The filling has fallen out
Food gets stuck at the location of the filling
When the above happen, schedule an appointment with your dentist to replace the filling as soon as possible.