When a cavity is too large to be filled then you may need a crown. Your dentist applies a crown over your tooth to protect it while restoring it to its original size and shape. Tooth-colored porcelain crowns are the most popular type because they blend well with existing teeth. Like all dental work, crowns will eventually need to be replaced. Good oral hygiene can significantly extend the life of a crown.
Some other reasons why you may need a crown include:
The dentist will take impressions of your teeth during your first visit. The first mold will be for your temporary crown, placed on your tooth while the lab makes your permanent crown.
Then the dentist will prepare your tooth for the new crown. All decay will need to be removed and then the dentist will shape the tooth surface. After applying the temporary crown the dentist will check your bite to make sure the temporary crown fits properly.
During the second visit your dentist will remove the temporary crown and clean your tooth. Then the permanent crown will be applied and your bite checked again for proper fit.
Your dentist will check your crown during regular exams to make sure it hasn’t become loose or damaged. In the meantime you should keep the crown clean by brushing and flossing as usual.
Original Source: https://www.craigarmstrongdds.com/restorations/steps-involved-getting-crown
Image Source: wikipedia.org/wiki/Crown_dentistry