A dental crown is a restoration that covers or caps a tooth, restoring it to its normal size and shape while strengthening and improving its appearance. Crowns are necessary when the tooth is broken down to the point where a filling will not be effective.
Benefits of Dental Crowns
A dental crown can be used for various reasons including covering discolored or misshapen teeth, and in conjunction with bridges and dental implants. Other benefits of dental crowns may include:
- Holding a cracked tooth together to prevent further damage
- Covering and supporting a tooth with a large filling
- Restoring a broken tooth
Types of Dental Crowns
There are several different methods of crown restoration, each using a different crown material. Different types of crown material include:
Metal Crowns
Metal crowns are made entirely of a metal alloy that may include gold, platinum, palladium, or other elements. Compared with other kinds of crowns, metal crowns preserve more of the tooth structure. They withstand biting and chewing forces well and rarely chip or break. The biggest drawback of metal crowns is the metallic color.
Resin Crowns
All resin crowns are the least expensive type of dental crown. The drawback is that they are more prone to chips and fractures than other crowns and tend to wear down over time.
Ceramic or Porcelain Crowns
These crowns provide the best natural color of all the dental crowns. They are not as strong as PFM or gold crowns, and they may wear down opposing teeth more than metal or resin crowns. Because they are the most cosmetically pleasing, they are commonly used for the front teeth.
