PORCELAIN
INLAYS AND ON LAYS
Composite resin is one of
the esthetic materials a dentist can use to restore back teeth (molars
and premolars). It is mainly composed of a polymer (plastic) and very hard,
inert micro-particles. Composite resin has been used for many years to
restore front teeth and to correct defects caused by cavities, fractures,
faulty tooth positioning, and other problems. Composite resin technology
has improved over the years, and now dentists are using it to restore back
teeth.
When indicated
Composite resin is used
when a restoration on a molar or premolar is cracked or lost. It is also
used to correct small to medium-sized imperfections (i.e., cavities, fractures,
developmental defects, etc.). Composite resin offers adequate long-term
resistance to cracking and wear and tear. A more fluid version of composite
resin is used as a sealant to prevent the development of cavities in the
pits and fissures of the chewing surfaces of the back teeth.
Advantages
Composite resin is available
in many different shades and therefore offers a good range of colour-matching
choices. The final result is very esthetically pleasing.
Preparing a tooth to receive
a composite filling is usually a more conservative process than preparing
a tooth for dental amalgam.
The final restoration is
cemented to the tooth. Before applying the composite resin in successive
layers, the dentist applies a sealing resin to the tooth. The tooth is
strengthened by the adherence of the composite resin.
Disadvantages
Restoring a tooth with composite
resin is a lengthier and more complex process than restoring a tooth with
dental amalgam.
Composite resin restorations
cost more than dental amalgam.
When composite resin is
applied to a wide surface, it is less durable than amalgam.
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