Dental Amalgam Part 1 Classification Uses Low Copper Amalgam Silver and tin are the most common elements found in dental amalgam alloy, although amalgam alloys are sometimes referred to as either low copper (i.e., less than ~5% cu by weight) or high copper alloys (i.e., 6% cu or higher by weight). 2, 8, 12 copper reduces brittleness and when sufficient copper is present in the alloy (≥11.8% cu by weight), little or no gamma 2 phase amalgam (γ 2; sn 7. Dental amalgam0:00 introduction0:11 definition0:23 uses0:35 contraindications0:49 classification1:39 manufacturing of amalgam2:31 composition & function of c.
Ppt Dental Amalgam Powerpoint Presentation Id 973867 Introduction. dental amalgam is one of the most versatile restorative materials used in dentistry. it constitutes approximately 75% of all restorative materials used by dentists. it has served as a dental restoration for more than 165 years. there is still no adequate economic alternative for dental amalgam. For more than 150 years, dental amalgam has served as a safe, durable, and affordable material in restorative dentistry. 1 according to the american national standards institute and ada standard no. 1, dental amalgam is an alloy that may include the elements of silver, tin, copper, zinc, indium, mercury, and noble metals (gold, platinum, and palladium) (american national standards institute. Classification of dental amalgam: classification of dental amalgam is done based on its alloys, depending on the type of alloy, shape, size and how it is mixed, etc. based on copper content: low copper alloy – < 6% copper (conventional alloy) high copper alloy – 6 30% copper content. it is divided into two types – admixed and single. Ag cu eutectic alloy (71.9% ag and 28.1% cu) particles are added to lathe cut low copper amalgam alloy particles. • stronger due to increase in residual alloy particle & decrease in matrix. • contains 30 55% spherical high copper particle. composition: ag 69% sn 17% cu 13% zn 1%.
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