Crowns can be made of a wide variety of materials. Gold is the most durable and can last for several years without chipping or showing any signs of wear and tear. Porcelain and ceramic are also extremely durable, but may begin to show signs of wear after five to seven years. There are reports of porcelain and ceramic crowns lasting much longer, normally in cases where the patient took excellent care of their teeth and visited the dentist on a regular basis. Temporary crowns can be made of almost any hard material, including hard plastic resin. A temporary crown is not designed to be permanent or long lasting. Most can remain in place for up to a year before beginning to show signs of wear.
Crowns that are made of gold can last indefinitely. Gold does not break down, nor will it wear away like ceramic or plastic. Porcelain and ceramic are both extremely durable materials, but porcelain tends to last longer because it is much harder than traditional ceramic. A porcelain crown can last anywhere from five to ten years, depending on the level of wear and tear. Yearly visits to the dentist are also beneficial and can identify any potential problems before they become major events. Temporary crowns are only meant to last a few months until a permanent crown can be put in place. Ceramic or hard plastic are the most common materials used for temporary crowns.
Several procedures involve the use of crowns or caps. Dental implants that are put in place once a tooth has been lost require a crown to complete the process. While the post takes the place of the root below the surface of the gums, a crown must be added to fill the gap left by the missing tooth or teeth. Crowns and caps are also used in the formation of bridges and other dental appliances that fill spaces left by missing teeth. The type of procedure will determine what material is used in the creation of the crown as well as whether or not the crown will be permanently placed in the mouth.
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