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New Motion Picture on Dental Amalgam Released is a Engineering article available to read on EtoBox.

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A new motion picture in color, entitled "Dental Amalgam--Failures Caused by Moisture Contamination," has just been completed at the National Bureau of Standards. This fihn, prepared under the joint auspices of the Bureau and the Research Commission of the American Dental Association, is the second of a series of technical films prepared for dental and allied professions. The dental amalgam film demonstrates one of the most common causes of amalgam failure--namely, contamination with moisture. This contamination with moisture is usually produced by mixing amalgam in the palm of the hand and by condensing amalgam in a wet field. The moisture introduced into the amalgam reacts with the alloy to produce hydrogen gas which causes excessive expansion, lowers compressive strength, and forms blisters. Clinically, contamination of amalgam with moisture is evidenced by expansion causing post operative pain, extrusion of the alloy from the cavity, formation of blisters, faulty margins, and fractured restorations. The film describes a satisfactory technique for the prevention of contamination. Since 1928 the National Bureau of Standards and the American Dental Association have conducted cooper

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Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0016-0032)

Published

1948

Field

Engineering (Physical Sciences)