What is a bridge?
A bridge is a dental appliance that replaces one or more natural missing
teeth, thereby "bridging" the space between two teeth. Fixed
bridges are cemented into place next to "abutment" teeth
- the surrounding teeth on either side of the space, or "span."
Unlike removable partial dentures, fixed bridges cannot be taken our
of the mouth by the patient.
A fixed bridge is a device that typically consists of three units
- a pontic (a false tooth) fused between two crowns (see diagram)
that are cemented to abutment teeth.
Who should get a bridge?
If you are missing any teeth and are committed to maintaining good
oral hygiene practices, you may be a good candidate for a bridge.
A bridge is the most natural choice to fill the space in your mouth
left by missing teeth. This space can cause the surrounding teeth
to drift out of position and can cause teeth and gums to become more
susceptible to tooth decay and gum disease that can cause further
tooth loss. Fixed bridges not only correct an altered bite, improve
your chewing ability and speech, but they also safeguard your appearance
by preventing the collapse of your facial features that can cause
premature wrinkles and age lines.
What types of bridges are there?
Besides traditional bridges, another popular design is the resin bonded
or "Maryland" bridge, primarily used for the front teeth.
This is usually the most economical choice when the abutment teeth
are healthy and don't contain large fillings. The pontic is fused
to metal bands that can be bonded to the abutment teeth with a resin
cement and hidden from view, reducing the amount of preparation of
the adjacent teeth.
A cantilever bridge may be used if there are teeth on only one side
of the spa. This involves anchoring the pontic to one side over one
or more natural, adjacent teeth. If there are no adjacent teeth to
act as anchors, your dentist may recommend an implant - a metal post
that is surgically imbedded into the bone and capped with a crown
as an abutment.
In some cases where the span is large, your dentist may recommend
a removable partial denture or even an implant-supported prosthesis.
What procedures are involved?
For a traditional fixed bridge, the first appointment consists of
the dentist reducing the adjacent abutment teeth that will act as
anchors. Impressions are made, from which a metal framework, including
the pontic, is created. By the second appointment, the final bridge
is fitted over the teeth.
The total treatment time is usually between two and four weeks, depending
on the type of bridge. However, because it is often difficult to match
the natural shade of your teeth, the treatment time may be longer.
How do I care for a bridge?
With a bridge, it is more important than ever to brush, floss and
see your dentist regularly. If you do not control the build up of
food debris and plaque - the sticky film of bacteria formed from acids
in foods - your teeth and gums can become infected, requiring further
treatment and resulting in possible loss of the new bridge. Your dentist
may also recommend using floss threaders that help remove bacteria
from hard to reach spaces between the bridge and adjacent teeth and
gums.
If your maintain optimal oral hygiene care, you can expect your fixed
bridge to last as many as 8-10 years, or even longer.