A crown is used to entirely cover or “cap” a damaged tooth. Besides strengthening a damaged tooth, a crown can be used to improve its appearance, shape or alignment.
A crown can also be placed on top of an implant to provide a tooth-like shape and structure for function.
Porcelain or ceramic crowns can be matched to the color of your natural teeth. Other materials include gold and metal alloys, acrylic and ceramic. These alloys are generally stronger than porcelain and may be recommended for back teeth. Porcelain bonded to a metal shell is often used because it is both strong and attractive.
Your dentist may recommend a crown to replace a large filling when there isn’t enough tooth structure remaining. Also crown will protect a weak tooth from fracturing and will restore a fractured tooth. Furthermore crowns are used to attach the bridge, cover a dental implant, restore a tooth that has been root canalled, or cover discolored or poorly shaped tooth. .
The most common method of crowning a tooth involves couple of dental visits. At your first visit your dentist will prepare the tooth by building it up with a composite, and then will take the impression of a prepared tooth which will be sent to the lab to fabricate the crown outside of the mouth. Once the crown is fabricated in the lab, then patient will return for another short appointment when this crown will be inserted.
Crowns are inserted with dental cement and are meant to last for a very long time.