Dental Tips Blog

Apr
17

Inlays, Onlays, Overlays – What’s the Difference?

Posted in Fillings

What do inlays, overlays, and onlays have in common? They are all called “indirect fillings.”

They’re designed outside the mouth and then cemented into a prepared tooth like a piece in a puzzle. Virtually the only difference between all these fillings has to do with their size.

Inlays

Inlays are the smallest, covering the least amount of tooth surface. They usually restore damage on the inner part of a chewing surface. Picture the valleys or grooves on the top of your molars. That’s where an inlay would fit into.

Onlays

One step above inlays, onlays anchor onto one of the cusps or pointy parts of a tooth for more stability. If one of those sharp “mountains” on your teeth gets damaged, an onlay would do the job of repairing it.

Overlays

Overlays are also referred to as partial crowns. They’re far more conservative than crowns, however. An overlay covers the entire top part of the tooth, but it doesn’t replace the entire outer layer of enamel as crowns do. These restorations offer the most strength and protection just short of a full crown.

Pinlays

Sometimes a dentist might decide to anchor an indirect filling with the support of a pin that’s fastened directly into the tooth.

Indirect fillings can be made of ceramic, porcelain, or gold and often require two visits to place. Some ceramic fillings can be made on-site in a single appointment if the office has that technology.

With the goal of being conservative yet strong, indirect fillings can help you retain more of your tooth for a long time. Ask your dentist for more information on the restorations available in your area.

Posted on behalf of:
Soft Touch Dentistry
1214 Paragon Dr
O’Fallon, IL 62269
(618) 622-5050

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