A crown (also called a cap) is a restoration that completely covers the part of the tooth that you can see when you smile. This part of the tooth is also called the clinical crown. A crown restoration enables us to restore a significantly affected tooth to its original shape and size. A crown can restore aesthetics to a tooth and strengthen remaining tooth structure.
There are many indications for crowns. Fractured teeth, decayed teeth, and teeth weaken by root canal treatment are among them.
There are many different materials that can be used in the construction of crowns. Very frequently we use Porcelain fused to metal and all porcelain crowns.
A crown procedure usually requires two appointments. Your first appointment will be the longer of the two appointments. At the first crown appointment, while the teeth are numb the tooth will be prepared for the crown by removing any decay and reshaping the tooth. This allows the anchor teeth to receive the crown restoration at the second visit. Also at the first appointment, accurate impressions will be made, and a plastic temporary crown will be fabricated. The second crown appointment will be a few weeks later. At that appointment the temporary crown will be removed. Then your real crown will be carefully checked, and adjusted to achieve a proper fit, and then cemented.
As with all dental restorations, crowns are not permanent and may someday need replacement. They are very durable, and have the potential to last many years. Excellent oral hygiene practices (including daily effective tooth brushing and flossing), eating habits (including decreased sweets), and regular dental visits will positively affect the longevity of your crown restorations.
Crowns are highly durable and will last many years, however they may need replacement or need to be re-cemented due to normal wear.