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Publication Detail
Dental amalgam
  • Publication Type:
    Chapter
  • Authors:
    Haque N, Yousaf S, Nejatian T, Youseffi M, Mozafari M, Sefat F
  • Publication date:
    01/01/2019
  • Pagination:
    105, 125
  • ISBN-13:
    9780081024775
  • Status:
    Published
  • Book title:
    Advanced Dental Biomaterials
Abstract
Various types of biomaterials such as polymer composites, glass ionomer cement, resin cement, gold, and dental amalgams have been used as directed restorative materials. Dental amalgam as a metallic direct restorative material is the main focus of this chapter. Dental amalgam is a popular biomaterial which has been used successfully in dental industry for decades. It is composed of a mixture of metal alloy and liquid mercury. Amalgam is mainly used for dental restorations. The metal alloy portion of this biomaterial has a composition made up of silver, tin, copper, and traces of other metals. The unique composition of amalgam gives rise to many useful properties such as excellent durability and strength. These are some of the many factors behind the long service life of amalgam with an average of 8-10 years. The main application of dental amalgam is the restoration of tooth cavities. After removing infected tooth tissue the cavity is modified to the required shape to receive the amalgam filling. The constituents of amalgam are then mixed together to form an amalgam paste, which is then placed in the cavity and left to complete the chemical reaction and become hard. Amalgam stays soft for a short period of time after it is mixed, enough to condense and shape onto the prepared tooth. This biomaterial is relatively cost-effective and widely used. Despite the benefits of amalgam fillings, the safety of them has been a very controversial subject over the years. This is due to the inclusion of elemental mercury within the composition of amalgam. Analytical chemistry techniques were used to investigate dental amalgam, and it has been established that mercury is released continuously. The aim of this book chapter is to investigate the application of amalgam as a dental biomaterial as well as the composition, biocompatibility, bonding, and material properties of amalgam.
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