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This discussion of the dental amalgam controversy outlines the debate over whether dental amalgam (the mercury alloy in dental fillings) should be used.Supporters claim that it is safe, effective and long-lasting, while critics argue that amalgam is unsafe because it may cause mercury poisoning and other toxicity.
The effects of long-term low-dose exposure to methylmercury are unclear. [6] Forms of mercury exposure include metal, vapor, salt, and organic compound. [3] Most exposure is from eating fish, amalgam-based dental fillings, or exposure at a workplace. [3]
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.
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Polishing of an amalgam filling; The pressure from high speed turbine dental drills can be enough to force amalgam particles into soft tissue, [1] as may occur when an old amalgam filling is being removed; When a tooth with an amalgam filling is extracted, [5]: 183 e.g. broken bits of amalgam filling falling into an extraction socket unnoticed [1]
There is insufficient evidence to assess the effects of crowns compared to conventional fillings for the restoration of root-filled teeth, decision of restoration should rely on the clinical experience of the practitioner and the preference of the patients. [31] If the tooth is not perfectly sealed, the canal may leak, causing eventual failure.
As conservation of tooth structure is a key ingredient in tooth preservation, many dentists prefer placing materials like composite instead of amalgam fillings whenever possible. Generally, composite fillings are used to fill a carious lesion involving highly visible areas (such as the central incisors or any other teeth that can be seen when ...
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 ...