A crown is a cover or « cap » on your tooth that preserves its normal shape, size, function and strength. The purpose of a crown is to make the tooth stronger and improve the way it looks. A crown is placed on the tooth after many dental procedures like implant, root canal treatment, teeth gap removal, smile makeover etc.
Types of Crowns:
Porcelain (PFM) Crown, also called as ceramic crown is a tooth colored crown. Unlike a metal crown, it has the same color of your natural teeth. Metal crowns can be easily seen by others in the mouth but porcelain crown are very difficult to identify among natural teeth.
Zirconia Crown is made up of very strong material Zirconium Dioxide (ZrO2). Zirconia is the strongest material for tooth crown. It is also a tooth colored crown like porcelain or ceramic crown. The zirconia crown is made using computerized technology CAD/CAM. The CAD/CAM technology ensures precise fit on the tooth. However, zirconia crown is expensive than a porcelain or ceramic crown.
Metal Crown are the oldest type of tooth crown used. These are metallic in color unlike zirconia, porcelain and ceramic crown which are tooth-colored. Metal crown has the lowest cost. The strength of a metal crown is same as porcelain and ceramic crown but is weaker than zirconia crown. People prefer porcelain, ceramic or zirconia crown than a metal crown because they are tooth-colored and do not look different than the natural teeth. Metal crown are easily noticed by others.