by 
The Curious Bag
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Traditionally when you needed to prevent your teeth from undergoing further decay, your dentist used amalgam fillings. These fillings, also called silver fillings, contained mercury. Now you have another, more aesthetically pleasing option called white composite fillings.
Identification
The white composite fillings are created from resin and either glass or quartz filler materials, according to the American Dental Association (ADA). Also, these fillings are mercury free.
Function
According to MyNewSmile.com, a respected dentistry website, white composite fillings can strengthen your natural teeth.
Significance
Unlike silver fillings, white composite fillings are less sensitive to the hot or cold foods or liquids you consume. In addition, the latter fillings require less removal of your natural teeth.
Disadvantage
One disadvantage of white composite fillings is the cost. You can expect to $150 to $500 per tooth, according to MyNewSmile.com, based on the amount of damage which needs to be repaired.
Considerations
Over time your white composite fillings may become discolored, according to the ADA.
Source:
American Dental Association:Oral Health Topics
My New Smile:White Composite Fillings Compared with Amalgam Fillings
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