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CROWNS
A crown (cap) is an artificial shell that fits over the existing tooth
or root and resembles the tooth that it is replacing. Crowns can be
made from porcelain, gold or porcelain bonded to gold and combine strength,
function and appearance to previously damaged or broken down teeth.
At the back of the mouth where aesthetics are not so important simple
gold crowns are often the treatment of choice. These restorations require
minimal reduction of tooth structure thereby preserving as much of the
natural tooth as possible. At the front of the mouth porcelain crowns
are often provided as these are extremely lifelike in appearance. The
biggest drawback with porcelain is that it is not as strong as metal
used in crowns. However, some modern porcelains such as ‘Procera’
and ‘Empress’ are cast like metal and are so strong that
they can in some instances used to restore back teeth. Porcelain bonded
to gold is also used extensively as it combines the strength of metal
with the appearance of porcelain.
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