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In Canada, amalgam use is considered safe and effective by some groups. A 2005 position statement from the Canadian Dental Association (CDA) states "current scientific evidence on the use of dental amalgam supports that amalgam is an effective and safe filling material that provides a long-lasting solution for a broad range of clinical ...
International research in dental materials science, International and Canadian Dental Standards, mercury in amalgam Derek William Jones (December 9, 1933 – February 15, 2024) was a British-born Canadian academic who was Professor Emeritus of Applied Oral Science and Biomaterials at Dalhousie University in Halifax, Nova Scotia, Canada .
Dental amalgam is the largest source of mercury received by U.S. treatment plants. [56] The U.S. Environmental Protection Agency (EPA) promulgated an effluent guidelines regulation in 2017 which prohibits most dental practices from disposing dental amalgam waste down the drain. Most dental offices in the U.S. are required to use an amalgam ...
The Canadian Health Measures Survey mercury & amalgam study: G. Mark Richardson, Mercury Exposure and Risks from Dental Amalgam in Canada: The Canadian Health Measures Survey 2007–2009, Hum. Ecol. Risk Assess., 20/2 (2014) 433-447. DOI: 10.1080/10807039.2012.743433 Data was collected on "the concentration of Hg in urine of survey participants.
Environment Canada estimates that more than one-third of the mercury load in sewage systems is due to dental practice. Dental amalgam is the most commonly used dental filling material. It is a mixture of mercury and a metal alloy. The normal composition is 45-55% mercury; approximately 30% silver and other metals such as copper, tin and zinc.
Hal Alan Huggins (1937 – November 29, 2014) was an American alternative dentistry advocate and campaigner against the use of dental amalgam fillings and other dental therapies that he believed to be unsafe. [1] [2] Huggins began to promote his ideas in the 1970s and played a major role in generating controversy over the use of amalgam. [3]
An amalgam dental filling. Dentistry has used alloys of mercury with metals such as silver, copper, indium, tin and zinc. Amalgam is an "excellent and versatile restorative material" [9] and is used in dentistry because it is inexpensive and relatively easy to use and manipulate during placement. It remains soft for a short time so it can be ...
Dental amalgam is also radiopaque which is beneficial for differentiating the material between tooth tissues on radiographs for diagnosing secondary caries. The cost of the restoration is typically cheaper than composite restorations. Disadvantages of amalgam include poor aesthetic qualities due to its colour.