Porcelain bonded crowns are ideal restoration for teeth that have broken down, or have been weakened by decay or a very large filling. A crown could be used for a number of other reasons, for instance:
- You may have discoloured fillings and would like to improve the appearance of the tooth.
- Following root canal treatment a crown may be needed to strengthen the tooth.
- To improve cosmetic appearance and aesthetics of your smile.
- If you have a dental implant to replace a missing tooth, a crown will be fitted on top of the titanium implant.
- To close gaps between teeth giving a more uniform smile.
- If a tooth is slightly out of position a crown may be used to align it with your other teeth.
- A crown can be made to mask any internal staining of your teeth.
- To close gaps to avoid food trapping.
Porcelain bonded crowns are made from a metal layer with porcelain layered over the metal. They are suitable for anterior and posterior teeth, however after time crowns that are made from a combination of metal fused to porcelain, can begin to show a dark shadow on the margin closest to the gum. This is due to the gum receding over time and exposing the neck of the crown where the porcelain over the metal work is at its thinnest. This is generally not a consideration on posterior teeth but anteriorly patients may want to consider a crown that does not have a metal substructure.