What are inlays and onlays?
 When over 1/2 of the tooth’s biting surface is damaged a dentist will often use an inlay or onlay. Inlays and onlays can be made of porcelain, gold, or composite resin. These restorations are bonded to the damaged area of the tooth. An inlay, which is similar to a filling, is used inside the cusp tips of the tooth; an onlay is a more substantial reconstruction, similar to the inlay but extending out over one or more of the cusps of the tooth.
Traditionally, gold has been the material of choice for inlays and onlays. In recent years, however, porcelain has become increasingly popular due to its strength and color, which can potentially match the natural color of your teeth.
How are they applied?
Inlays and onlays require two appointments to complete the procedure. During the first visit, the filling being replaced or the damaged or decaying area of the tooth is removed, and the tooth is prepared for the inlay or onlay. To ensure proper fit and bite, an impression of the tooth is taken, and sent to a laboratory for fabrication. Dr. Kelliher will then apply a temporary restoration on the tooth
At the second appointment, the temporary restoration is removed. Dr. Kelliher will then make sure that the inlay or onlay fits correctly. If the fit is satisfactory, the inlay or onlay will be bonded to the tooth with a resin material and polished to a smooth finish.
Considerations
Traditional fillings can reduce the strength of a natural tooth by up to 50%. As an alternative, inlays and onlays, being bonded directly onto the tooth using special high-strength resins, can actually increase the strength of a tooth by up to 75%. As a result, they can last from 10 to 30 years. In some cases, where the damage to the tooth is not extensive enough to merit an entire crown, onlays can provide a very good alternative.
Inlays and onlays can actually increase the strength of a tooth by up to 75%.
This process requires two appointments.
Your First Appointment:
- The old filling is removed and any additional decay.
- An impression is made of your teeth. A model of your teeth is made and sent to the laboratory.
- A temporary onlay is placed on the tooth.
At the Lab:
A resin material is carefully placed into the model of your teeth. It is then designed to look natural.
Your Second Appointment:
- The temporary onlay is removed.
- A conditioning gel is placed on your tooth to prepare it for the new onlay.
- Bonding cement is placed on the tooth and a high intensity light bonds the resin to the tooth.
- The tooth is then polished.
Maintaining Your New Inlay/Onlay:
Brush and floss as you normally would. Don’t be afraid that you will damage your inlay/onlay by brushing and flossing. Non-abrasive toothpaste is recommended. A good home care regimen will insure the best esthetic success of your inlay/onlay.
You may experience some sensitivity to hot and cold after initial placement of your inlay/onlay. Some sensitivity is normal and should dissipate after one to two weeks. If sensitivity persists please call the office.
If you are a known clencher (bruxer), please be sure to let us know. Dr. Kelliher may recommend a soft night guard for you to wear to minimize stress placed upon your teeth while you sleep.
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Dental Services
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