Crowns
What is it?
A crown is a full coverage restoration that is cemented on top of prepared tooth structure to replace, restore or enhance a tooth to its previous shape and function. The crown is usually made out of a combination of gold, porcelain or ceramic.
Why do I need it?
A crown is usually recommended in the following circumstances:
- Over an endodontically treated tooth.
- To restore a tooth with a large filling to prevent tooth fracture.
- Trauma.
- To replace if there is recurrent decay.
- To replace a broken crown.
- To improve aesthetics.
- To correct a bite.
- Other cosmetic problems.
What does it involve?
A. Prior to initiating a crown:
- Root canal therapy may be indicated.
- Crown lengthening may be indicated in some cases.
B. Preparing a crown involves:
First appointment:
- Reducing the existing tooth structure in order to achieve adequate retention.
- Taking impressions.
- Fabricating a temporary crown.
- Shade selection.
In between the 1st and 2nd appointment a patient may choose to have custom staining completed by the lab.
Second appointment:
- Removing the temporary crown
- Trying in the crown.
- Cementing the crown.
How successful is it?
Crowns are not permanent and may need to be replaced. Proper oral hygiene is critical to the long term success of a crown. Crowns are usually expected to last between 5-20 years. If the tissues surrounding the crown recede with time as patient ages a new crown may be needed for aesthetic reasons.
Crowns usually have the longest lifespan of any restoration.
What happens after?
Regular maintenance is critical, including a customized oral hygiene regiment and routine recall exams and cleanings which may range between 3-6 months as advised by the dentist.
