Cosmetic Dentistry

Inlay and Onlay Restorations

Indirect restorations used to repair selected areas of damaged or decayed tooth structure.

A dentist treating a patient’s damaged back tooth

Between a filling and a crown

An inlay or onlay is made outside the mouth and bonded into or onto a prepared tooth. It may be considered when a direct filling is not appropriate but a full crown is not required.

Treatment planning

The choice depends on the location and extent of damage, remaining tooth structure, bite, material considerations, and the condition of the tooth and surrounding tissues. Some teeth need a different restoration or additional treatment.

Placement and care

Treatment may involve more than one appointment depending on the workflow. After placement, normal brushing, flossing, and professional monitoring remain important. Contact the practice about pain, looseness, fracture, or a change in the bite.

Common questions

Frequently asked questions

What is the difference between an inlay and an onlay?

An inlay fits within the raised cusps on a tooth’s chewing surface. An onlay covers a larger area and extends over one or more cusps when those parts of the tooth also need support.

When might an inlay or onlay be recommended?

An inlay or onlay may be considered when a tooth has too much damage for a direct filling but still has enough healthy structure that a full crown may not be necessary. The final recommendation depends on the tooth, bite, and extent of damage.

How do inlays and onlays differ from fillings and crowns?

A filling is shaped directly in the tooth, while an inlay or onlay is custom-made outside the mouth and then bonded to the prepared tooth. A crown covers more of the tooth and may be needed when greater structural support is required.

What materials are used for inlays and onlays?

Inlays and onlays may be made from tooth-colored ceramic or other restorative materials. The appropriate material depends on the tooth’s location, appearance, bite forces, remaining structure, and other clinical considerations.

Does treatment require more than one appointment?

It may. Some workflows involve preparing and scanning or impressing the tooth at one visit, protecting it with a temporary restoration, and bonding the finished inlay or onlay at a later visit. Your dentist will explain the planned process for your restoration.

How should I care for an inlay or onlay?

Brush and floss normally, attend recommended dental visits, and avoid habits that can damage teeth or restorations. Contact the practice if the restoration feels loose, fractures, causes pain, or changes the way your teeth meet.

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