Onlays can be utilized to conservatively repair teeth that have large defective fillings or have been damaged by decay or trauma. Onlays are an ideal alternative to crowns (caps) because less tooth structure is removed in the preparation of onlays. Onlays are essentially identical to inlays with the exception that one or more of the chewing cusps have also been affected and need to be included in the restoration.
As with most dental restorations, onlays are not always permanent and may someday require replacement. They are highly durable and will last many years, giving you a beautiful long lasting smile.
Reasons for onlay restorations:
What does getting an onlay involve?
An onlay procedure usually requires one appointment. An impression is made using a covering of titanium dust. This dust allows the camera to take a highly detailed picture of the tooth. Images are formulated with the CEREC® camera. CEREC® optical imaging utilizes an infrared wavelength.
The image is transposed onto the computer screen. It is here that the dentist is able to view the tooth from every angle and design the final restoration. When the design is complete, it is transmitted to the milling unit. The dentist chooses a block of ceramic that matches the color of the teeth. This ensures that the restoration will be almost invisible.
Within 15 minutes, the full crown, onlay, overlay or veneer is complete. The restoration is made of compressed, rather than laboratory-layered porcelain. This enhances strength and durability.
Before affixing the restoration to the tooth, the dentist will place it dry to ensure it fits perfectly. It is then polished and affixed to the tooth with dental cement. The procedure is now complete, and all without the need for a second visit! The quality of the results is the same as the laboratory-generated restoration, but a great deal of time and money has been saved.
You will receive care instruction at the conclusion of your treatment. Good oral hygiene practices, a proper diet, and regular dental visits will aid in the life of your new inlay.
CEREC® can benefit almost anyone needing a ceramic restoration device. Exceptions include patients who have a prior history of breaking ceramic devices and those with a deep bite. CEREC® devices are proven to last for over 5 years, but recent research indicates that most CEREC®-created restorations last for more than 10 years.
If a porcelain onlay is required, the procedure is as follows:
An onlay procedure usually requires two appointments. Your first appointment will include taking several highly accurate impressions (molds) that will be used to create your custom onlay and a temporary restoration.
While the tooth is numb, the dentist will remove any decay and/or old filling materials. The space will then be thoroughly cleaned and carefully prepared, shaping the surface to properly fit an onlay restoration. A temporary filling will be applied to protect the tooth while your onlay is made by a dental laboratory.
At your second appointment, your new onlay will be carefully and precisely cemented into place. A few adjustments may be necessary to ensure a proper fit and that your bite is comfortable.
You will receive care instruction at the conclusion of your treatment. Good oral hygiene practices, a proper diet, and regular dental visits will aid in the life of your new onlay.