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Removable
Partial Dentures with cast metal frameworks offer numerous
advantages over the conventional partial dentures commonly
used. The frameworks of these dentures are cast to fit the
teeth. Since they sit on the teeth, as well as being attached
to them, they are extremely stable and retentive. The teeth
have to be altered slightly beforehand in order that the partial
denture can rest upon them without interfering with the way
the patient bites the teeth together.
The metal framework does not contact the gums. Thus, as the
gums resorb, this type of partial denture does not sink with
them and rarely requires relining. Because the teeth are altered
beforehand, there are fewer limitations in the placement of
clasps, and they are less likely to be seen than the wrought
wire clasps of the conventional treatment partial denture.
Modern frameworks are cast from an extremely strong alloy
called chrome cobalt which can be cast very thin and are much
less likely to break than the all plastic variety. They are
also much less noticeable to the tongue.
The largest single advantage that cast metal framework partial
dentures have over the other types of partials is that sore
spots are almost never an issue since neither the framework,
nor the plastic extensions contact the soft oral tissues with
any force! Patients who exhibit the symptoms of TMJ, or who
are known bruxers are much better off with cast metal partials
than with flexible framework partials.
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