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Amalgam is a metallic filling material composed from a mixture of mercury (from 43% to 54%) and a powdered alloy made mostly of silver, tin, zinc and copper, commonly called the amalgam alloy. [16] Amalgam does not adhere to tooth structure without the aid of cements or use of techniques which lock in the filling, using the same principles as a ...
Amalgam filling on first molar. In dentistry, amalgam is an alloy of mercury used to fill teeth cavities. [1] It is made by mixing a combination of liquid mercury and particles of solid metals such as silver, copper or tin. The amalgam is mixed by the dentist just before use.
Gold fillings are thought to be older than "amalgam fillings, and by extension, that makes them much older than composite or porcelain fillings." [ 11 ] [ better source needed ] According to the Wall Street Journal, Dr. Ruchi Sahota, a dentist in Fremont, Calif., reports that gilded canines and incisors were common throughout the early and mid ...
Composites and amalgam are used mainly for direct restoration. Composites can be made of color matching the tooth, and the surface can be polished after the filling procedure has been completed. Amalgam fillings expand with age, possibly cracking the tooth and requiring repair and filling replacement, but chance of leakage of filling is less.
Inlays are a type of indirect restoration (filling) that is used to restore extensively damaged or decayed teeth. When compared to conventional (direct) fillings, inlays have several advantages: Inlays are extremely strong and durable: well-made gold inlays, in particular, have exceptional longevity with proper care [ 8 ]
Amalgam does not bond to tooth tissue and therefore requires mechanical retention in the form of undercuts, slots and grooves. However, if insufficient tooth tissue remains after cavity preparation to provide such retentive features, a cement can be utilised to help retain the amalgam in the cavity.
Auguste Taveau (Louis Augustin Onésiphore Taveau) was a French dentist born in Le Havre, the 28th of August 1792. [1] Date and place of his death are still unknown. In 1826, he was among the first to use amalgam as a dental restorative material, [2] although he had originally developed it as early as 1816.
He is also known for his principles of tooth preparations, in which he outlines the proper methods to prepare teeth for fillings. These cavity preparations used principles of engineering and material sciences to maximize strength and retention of the amalgam filling and minimize fractures as well as tooth anatomy, to minimize pulp exposure. [ 4 ]