Crowns & Bridges In dentistry, crowns and bridges refers 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 it's
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, with a crown, the damaged tooth,
with a bridge, the adjacent teeth. A badly decayed or broken tooth may
require that the tooth be "built up" with a special restorative material
during the preparation of the teeth. With a fixed bridge, the prosthesis
will span the area of a missing tooth, known as a pontic, while the two or
more adjacent supporting teeth are called abutments. An impression is
taken of the prepared area, and a temporary crown or bridge is
placed.Some slight discomfort is possible after the teeth are prepared. Generally local aneasthetic will eliminate the discomfort. Warm salt water rinses can also speed the recovery of the gums in the area. The permanent crown will fit considerably better than the temporary crown, so the temporary crown gives little indication of how the final crown will fit or feel. It is important that the temporary crown or bridge stay in place until the final crown or bridge is placed. If the temporary should come off early, please call at the clinic. After about two weeks, the crown or bridge is ready to be fitted, adjusted, and cemented in place. Crowns and bridges can be made of several materials(gold/metal/ceramic
i.e. porcelain ). Full gold
crowns are normally done on the very last teeth in the mouth where
strength is most important and appearance is less important.Porcelain fused to metal offers most of the strength of full gold, but the esthetics of a tooth colored crown. A thin layer of "High Noble Metal" is made to exactly fit over the prepared tooth model, then porcelain is layered and fired in a ceramic oven at over 2000 degrees, till the desired shape and size is achieved. Front teeth can be restored with porcelain fused to gold, but
sometimes an all porcelain crown is used. Dr. Chetan Bhole uses castable porcelain that is
stronger and more life-like than conventional porcelains. With porcelain
fused to gold and all porcelain Empress crowns, the color of the porcelain
is shaded to match the existing teeth, or in some cases, lighter to
cosmetically brighten the smile.Some of the indications for a crown are:
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