What Are the Main Signs You Need an Inlay or Onlay Instead of a Filling?

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Fillings are good for small decay, but not all teeth can be fixed with a filling. When the damage is too extensive, your dentist may suggest inlays or onlays. Catching these signs early can help you save more of your natural tooth structure.

What Sets an Inlay or Onlay Apart From a Filling

A filling repairs a small area of decay or minor damage with soft material that hardens in place. An inlay or onlay is custom-made in a lab from porcelain, resin, or gold. It is then bonded into the tooth to restore more structure than a filling provides.

Signs Your Tooth Needs More Than a Filling

A Cavity Too Large for a Standard Filling

When the cavity encompasses most of the tooth’s surface, a filling may not provide reliable support. The remaining tooth structure often becomes too thin to hold the filling material securely in place. In these cases, an inlay or onlay offers better long-term strength than a standard filling.

A Cracked or Fractured Tooth

A crack that reaches the biting surface, or cusp, of a tooth needs more support than a filling gives. If left untreated, the crack can spread deeper into the tooth. The onlay covers and reinforces the cusp, helping to reduce the risk of the crack getting worse over time.

An Old Filling That’s Breaking Down

Over time, fillings can wear down or develop small gaps around the edges. Bacteria may enter these spaces and cause new decay beneath the restoration, often without noticeable symptoms at first. In some cases, replacing an old filling with an inlay or onlay provides stronger support and a more durable restoration.

Pain When You Bite Down

Sharp pain when you bite down, especially on hard or chewy foods, often signals a crack or weak spot a filling cannot fix. This kind of pain tends to come and go, which makes it easy to ignore until more of the tooth structure is affected.

Why Dentists Recommend Inlays & Onlays

Dentists often turn to inlays and onlays because they preserve more of the natural tooth than a crown while offering more strength than a filling. They fit the contours of the decayed region well and efficiently distribute the force of biting.

What to Expect at Your Appointment

Getting an inlay or onlay usually takes two visits. Some dental offices offer same-day restorative treatment. At the first visit, your dentist removes decay, takes an impression, and places a temporary covering. The permanent restoration is then fabricated in a dental laboratory and bonded into place during your second visit.

Conclusion

If chewing feels uncomfortable, a filling keeps failing, or a crack has reached the biting surface, it may be time to consider a stronger restoration. Catching these signs early can help you save more of your natural tooth and may help prevent further damage that could require more extensive treatment in the future.

Lake Elsinore Dentistry provides careful exams to identify the most suitable restoration for your tooth. Call (951) 579-1010 to schedule a visit and get the care your tooth needs.

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