Why Do Old Fillings Need to Be Replaced?

A filling can last many years, but it is not permanent. Over time, fillings can wear, chip, crack, or pull away from the tooth. When the seal around a filling breaks down, bacteria can get underneath and cause recurrent decay.

Old fillings may also place stress on the remaining tooth structure. Large fillings, especially in back teeth, can act like wedges as you chew. If the surrounding enamel develops cracks or cusps become weak, a simple replacement filling may not be enough. In those cases, a crown or onlay may provide better long-term protection.

Not every older filling needs to be replaced immediately. Some are stable and can be monitored at routine exams. Replacement is usually recommended when there is decay, an open margin, a fracture, sensitivity related to the restoration, food trapping, or a high risk that the tooth may crack further.

The goal is to be conservative but realistic. We want to preserve as much healthy tooth structure as possible while also preventing avoidable emergencies. If an old filling is questionable, photos and x-rays can help you understand whether it should be watched, repaired, replaced, or restored with a stronger option.

When should you ask a dentist?

If you notice symptoms, have a change in your bite, or are unsure whether something is normal, a dental exam is the safest way to get a clear answer. Early evaluation often gives you more conservative options.

Looking for the best dentist in Encino, CA? August de Oliveira DDS offers friendly, modern dental care with same-day digital dentistry options when appropriate.

August de Oliveira DDS
5400 Balboa Blvd Unit 231, Encino, CA 91316
818-783-2981
augustdeoliveiradds.com