Amalgam (silver fillings) have been replaced with other methods of restoring a tooth for many reasons. One of the main reasons is because of the nature of amalgam, it may expand causing the filled tooth to crack over time.
Composite resin fillings are one of the tooth coloured fillings that are commonly used, and it is done by sculpting the material directly in the mouth. Porcelain restoration on the other hand is fabricated in the laboratory based on an impression of your teeth and is stronger than the composite fillings.
Thus, many patients are replacing their amalgam for composite or porcelain fillings. Amalgam removal is being done under high speed suction in order to reduce exposure to mercury vapour in the process. Here, dentists use rubber dam because it greatly reduces the patient’s exposure to mercury vapour.
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