Dental Amalgam Pustaka :

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Presentation transcript:

Dental Amalgam Pustaka : Anusavice : Phillps’ Science of Dental materials Combe E.C. : Notes on Dental Materials Endanus Harijanto

Overview Basic composition Basic setting reactions Classifications Manufacturing Variables in amalgam performance Material related variables Dentist controlled variables

Objectives Know the advantages and disadvantages of amalgam Know the classification and understand the amalgamation process of each type of amalgam Know how to control the quality of amalgam Know the recommendations in mercury hygiene

Definitions (1) Amalgam = an alloy of mercury and one or more other metals Dental amalgam is produced by mixing liquid mercury with solid particles of an alloy of silver, tin, copper, and sometimes zinc, palladium, indium and selenium.

Definitions (2) Trituration Amalgam alloy is mixed with mercury. “Amalgamation Process” Mercury dissolves the surface of alloy particles  a composite plastic mass (some new phases form). Setting and hardening occur as the liquid mercury is consumed in the formation of new solid phases.

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