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Crowns
(Caps) and Bridges
In
dentistry, crowns (caps) and bridges refer to the restoration
of natural teeth that have been damaged, decayed or lost.
A crown can be made to restore an individual tooth damaged
by decay or fracture back to its original form and function,
while a bridge is used to replace one or more missing teeth.
These restorations are cemented onto the teeth and are referred
to as "fixed" dentistry as opposed to a restoration
of missing teeth with a removable appliance or partial denture.
Both procedures require the use of a
local anesthetic and the grinding or preparation of the teeth:
They are pain free ! With
a crown, only the damaged tooth is being prepared. With a
bridge, the adjacent teeth have to be prepared in a certain
way. A badly decayed or broken tooth may require that the
tooth needs a build up or sub filling before the crown can
be fabricated. In our office we never use mercury fillings
as build up materials as commonly seen With
a fixed bridge, the prosthesis will span the area of a missing
tooth while the two or more adjacent supporting teeth - called
abutments - will hold the replaced tooth in its place to fill
the gap. It is an easy and very predictable procedure and
I have done thousands of three unit bridges replacing one
missing tooth only or up to ten unit bridges were many gaps
had to be restored.
Crowns and bridges can be made of several materials. Full
gold crowns are normally done on the very last teeth in the
mouth where strength is most important and appearance is less
important. While cheaper non-precious metals and low gold
metals are available, I use "Very High Noble Metal"
gold for my full gold crowns and bridges.
Porcelain fused to metal offers most of the strength of full
gold, but the esthetics of a tooth colored crown. Porcelain
is layered and fired in a ceramic oven at over 2000 degrees,
till the desired shape and size is achieved. Most of my crowns
are porcelain crowns, since esthetics is of the outmost importance
for most of my patients. The key to success is not only a
talented dentist but also an excellent dental laboratory with
an artistry dental technician. The communication via computer
is critical
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