Inley-Onley Restorative Treatment

In dentistry, “onlay” and “inlay” are terms used to describe types of dental restorations that are used to repair damaged or decayed teeth while preserving as much healthy tooth structure as possible. These restorations are custom-made to fit precisely within or on the tooth and are typically fabricated from materials like porcelain, ceramic, or composite resin. Both onlays and inlays offer a conservative approach to dental treatment by avoiding the need for full crowns.

Here's the difference between onlays and inlays:


  • An inlay is a type of dental restoration that is designed to fit within the biting surface (occlusal surface) and the grooves of a tooth.
  • It is used to repair moderately damaged teeth where the chewing surfaces have been affected by decay or other structural issues.
  •  nlays are used when the damage or decay is not extensive enough to require a dental crown


  • An onlay is a dental restoration that covers a larger portion of the tooth than an inlay. It extends over the biting surface and can also extend over one or more of the tooth’s cusps (projections).
  • Onlays are used when the damage or decay is more extensive and involves both the biting surface and the cusps of the tooth.
  • Onlays provide a more extensive restoration while still preserving as much natural tooth structure as possible.

Both inlays and onlays are considered more conservative options compared to dental crowns, which require more tooth structure removal. They are custom-made to match the shape and color of the patient’s natural teeth, resulting in a seamless and natural appearance.

The process of getting an inlay or onlay typically involves the following steps:

Tooth Preparation:

The damaged or decayed portion of the tooth is removed, and the tooth is prepared to receive the restoration.


An impression of the prepared tooth is taken to create a precise model of the tooth.

Restoration Fabrication:

  • The inlay or onlay is custom-made in a dental laboratory based on the impression.

Temporary Restoration:

  • A temporary restoration may be placed on the tooth while the permanent inlay or onlay is being fabricated.

Permanent Placement:

Once the permanent restoration is ready, it is bonded onto the tooth using dental adhesive.


+90 507 831 61 76

19 Mayıs, Dt. Ibrahim Cihat Clinic, Dr. Hüsnü İsmet Öztürk Sk. Şişli Plaza kat B1, 34360 Şişli/İstanbul
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