By taking care of dental problems immediately, you minimize the
risk of future problems.
This is the art of replacing missing natural teeth with artificial teeth,
which are just as functional and esthetical as your natural teeth. With recent
developments in dentistry, a number of alternatives are available to replace
missing teeth, ranging from traditional dentures to crowns and bridges and even
dental implants. It is essential to restore lost teeth as early as possible with
something that closely resembles your teeth.
A crown restores the damaged tooth and mimics the size, shape and color
They are indicated for fractured and worn out teeth; to protect teeth
that have been filled by root canal treatment; to provide extra support for
bridges; and to cover poorly shaped or discolored teeth.
of the original tooth.
They on an average last for five to eight years, but can even last much
longer if proper oral hygiene is maintained.
The tooth to be crowned is prepared (i.e. reduction of the tooth size)
followed by an impression of the tooth, being obtained. This reduction of
the tooth is required to build room for the crown to be fixed. The
impression taken is then sent to a laboratory where expert technicians will
fabricate the crown. In the meanwhile, a temporary crown is made and fixed
on top of the reduced tooth.
Crowns can be made of porcelain, gold metal or newer restorative materials
like metal-free ceramics.
Types of dental crowns
All Ceramic– These crowns are best esthetically and
have the advantage of being ‘metal free’. This is a big advantage even for
subsequent scan in the face and head region since it does not produce
‘scatter’ during CT scans.
Ceramic fused to Metal– They merge the strength of the
metal along with the esthetics of porcelain. Although the porcelain is
somewhat more prone to chipping, they are still tough. They are the most
commonly used crowns now.
All Metal– This includes gold alloy and other base
metal alloys. Metal crowns are the toughest. They rarely break or chip and
can resist daily wear and tear. The only disadvantage is that they look like
metal and not a natural tooth.
A dental bridge restores missing teeth by "bridging" the
space between two existing teeth. The crowns are fixed over the remaining
teeth to hold the false tooth in place.
When teeth are only on one side of the space, cantilever bridges can be
given. Cantilever bridge consists of two or more side-by-side crowns and
only one is fixed over the prepared natural teeth.
To design a bridge, the reshaping of the abutment tooth or teeth is done
to make space for the crowns. Then the mold of the teeth is made. This mold
is then sent to a laboratory, where the crowns and bridge are made.
They prevent the nearby teeth from moving or shifting in the oral cavity
and also stabilize the bite of a patient with missing one or more teeth.
Unlike partial dentures, bridges are fixed; patients need
not remove them. The lost tooth is replaced with an artificial one attached
between two crowns, and is permanently cemented onto the adjacent teeth.