Crowns have been floating around the world of dentistry for decades now and they do invaluable work at helping to restore a tooth if it has been injured or has succumbed to decay. Generally, to keep the visual harmony going in the smile, most people will opt for a crown made from porcelain and depending on where the crown needs to be placed in the mouth, it will govern how the crown will be constructed. A crown at the back of the mouth will undergo a lot of stress caused by chewing, so it will have to be strong, in which case, a porcelain-over-metal crown would be used because of its strength. Towards the front of the mouth however, you can get away with using a crown made entirely from porcelain. But in both of these cases, some people opt for gold- again strong, yet it does rather come across a bit of a status symbol as well if it is put on show at the front of the mouth. Crowns are also used for replacing missing teeth and can be used in bridgework or in conjunction with a dental implant. If you need more information about crowns, then get in touch with the Clifton dental studio in Bristol, as they ply their trade around Chepstow.