What Is Dental Amalgam

Amalgam technically means an alloy of mercury (Hg) with any other metal. Most people recognize dental amalgams as silver fillings. Dental amalgam is a mixture of mercury and an alloy of silver, tin and copper.

Mercury makes up about 45-50% of compound.
 
Mercury is used to bind the metals together and to provide a strong bond together and to provide strong, hard durable filling. After years of research, mercury has been found to be the only element that will   bind these metals together in such a way that it can be easily manipulated into the cavity.
 
 

 APPLICATIONS OF AMALGAM                         

  1. As a permanent filling material.
  2. In combination with retentive pins.
  3. To restore a crown.
  4. For making dies.
  5. In retrograde root canal fillings.
  6. As a core material.                                                                       

CLASSIFICATION OF AMALGAM  

Based on Cu content
  1. Low Cu alloys
  2. High Cu alloys
 Based on Zn content
  1. Zn containing.
  2. Zn free
Based on shape of alloy particles
  1. Lathe cut.
  2. Spherical alloys 
  3. Spheriodal alloys.

 

 

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