Dental inlays and onlays are made in a dental laboratory and bonded to the tooth to protect a damaged tooth from further decay, often as a permanent alternative to fillings, crowns, or other dental restorations.
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What Are Dental Inlays and Onlays?
Inlays and onlays are restorative procedures used in the treatment and repair of cavities. They are often used as a replacement for other oral health solutions like fillings or crowns.
How Inlays and Onlays are Used
Inlays and onlays are types of dental restoration that are made in a dental laboratory. They are fabricated as single, solid parts that are designed for placement directly over the chewing surface of the existing tooth structure. They are available in porcelain, gold, and resin.
Used as both a cosmetic and restorative technique, inlays and onlays have many benefits.
The Difference Between Inlays and Onlays
The main difference between inlays and onlays is in the shape of the inlay and its orientation on the tooth surface.
An inlay can be placed between the cusps of the tooth without extending into the surrounding tooth area if the damage is limited to the top surface of the tooth.
An onlay will cover more of the tooth surface, including the cusps if the damage extends to the cusps.
Inlays and Onlays Versus Dental Crowns
As a conservative treatment option for dental crowns, inlays or onlays may be suggested. In contrast to dental crowns, they do not cover the entire tooth; instead, they are placed on the cusp of the tooth. This is less invasive for the patient as the natural tooth does not need to be ground down to fit.
Inlays and Onlays Versus Fillings
Inlays and onlays are often used to repair larger cavities, while fillings are usually recommended for smaller cavities when more tooth structure remains. However, depending on the level of decay, both options may be available.
How Inlays and Onlays are Placed
Inlays and onlays are usually made throughout two visits (unless the dentist you've chosen can make them on the same day). Your dentist will remove the decayed part of the tooth and make a mold of the tooth during the first appointment. To protect the tooth between appointments, a temporary onlay is usually used.
A custom inlay or onlay will then be made in a dental laboratory. The restoration will be bonded to the chewing surface of the tooth at your second appointment. They are a long-term solution and can last up to 30 years once fully bonded to the tooth.
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