WASHINGTON, Dec 10 (Reuters) - U.S. health regulators are seeking a second opinion on whether mercury-containing dental fillings pose ... last year that the metal alloy is safe.

In dentistry, a crown is a cap or covering fitted over part of a tooth that’s damaged from: breakage tooth decay a root canal a large filling ... recommend using metal alloys that resist corrosion.

Known in the trade as amalgam, the dental compounds consist of about half mercury blended with metal alloys that include silver and often have been presented to patients as “silver fillings.” ...

Known in the trade as amalgam, the dental compounds consist of about half mercury blended with metal alloys that include silver and often have been presented to patients as "silver fillings." ...

Metal dental fillings leak mercury if they are exposed to a new powerful type of medical scan, scientists have found. They studied the effect of ultra-high-strength MRI - the latest in scanning ...

Getting a filling is a common ... be harmful for certain groups. Dental amalgam is a mixture of metals, consisting of elemental mercury and a powdered alloy composed of silver, tin and copper.

WASHINGTON, Dec 10 (Reuters) - U.S. health regulators are seeking a second opinion on whether mercury-containing dental fillings ... decide last year that the metal alloy was safe.