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Cast gold
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Advantages:
1. Strength -
can withstand chewing forces
2. Durabilit -
can last to 10 years or more and doesn’t corrode
3. Aesthetics -
Some patients preferred gold rather than silver amalgam
Disadvantages:
1. Cost -
more than other materials, up to 10 times higher than cost of
amalgam filings
2. Additional visits -
requires at least 2 visits to do it
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3. Galvanic shoc -
a gold filling placed immediately next to the silver, amalgam filling
can cause a sharp pain.
(a reactions between the metals and saliva causes electric current
to oocur but the case is rarerly)
4. Aesthetics -
most patients find composites filings more pleasing to the eye |
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Amalgam fillings |
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Advantages:
1. Durability -
last 15 years compare to composites filling
2. Cost – is less expensive
than composite fillings
3. Strength -
can withstand chewing forces
Disadvantages:
1. Discoloration –
amalgam filling can create grayish color to the surrounding
tooth
structure
2. Poor esthetics -
fillings don’t match the color of your natural teeth
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3. Destruction of more tooth structure – cut
the healthy parts of the tooth –often removed to make space large
enough to
hold the amalgam fillings
4. Cracks and fractures -
although all teeth expand and contract in the presence of hot and
cold liquids, which ultimately can cause
the tooth to crack or fracture, amalgam material – in comparison with
other filling materials–may experience a wider degree of
expansion and contraction and lead to a higher incidence of cracks
and fractures |
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Tooth-colored composite fillings |
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Advantages:
1. Aesthetics - the
color of the composites can be closely matched to the color
of existing teeth; is particularly well suited for use in front
teeth or visible parts of teeth
2. Versatility in uses –
in addition to use as a filling material for decay, composite
fillings can also be used to repair chipped, broken or worn
teeth
3. Bonding to tooth structure -
composite fillings actually chemically bond to tooth structure,
providing further support to the tooth
4.
Tooth - sparing preparation- less tooth structure needs
to be removed compared with amalgams when removing decay and
preparing for the filling
Disadvantages:
1. Cost–
more expensive than amalgam fillings
2. Chipping -
depending on location, composites materials can chip off the
tooth
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3. Increased chair time – Due to the process when to apply the composite materials, these
fillings can take up to 30 minutes
longer than amalgams
4. Lack of durability -
composite fillings wear out sooner than amalgam |
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*Tooth-colored, composite resin fillings,
two types of tooth-colored fillings exist–
1. Ceramics and
2. Glass ionomer.
3. Ceramics, are made most often of porcelain, are more resistant to staining
than composite resin material but are also more abrasive. This
material generally lasts more than 15 years and more expensive
than gold.
4. Glass Ionomer -
is made of acrylic and a specific type of glass material. This
material is most commonly used for fillings below gum line and
for fillings in young children( drilling is still required).
Glass Ionomer generally last 5 years or less with cost comparable
to composite resin. |
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