In-depth disinfection of acrylic resins*

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This study demonstrated that bacteria penetrate three kinds of dental acrylic resin after a short time period. Samples of acrylic resin were contaminated with a variety of bacteria and were then placed in three different disinfecting solutions as directed by the manufacturers. After the specific dilution and immersion time, cultures were made from the resin samples. The only effective disinfectant was a 0.525% solution of sodium hypochlorite at a 10-minute immersion. It disinfected not only the surfaces but also the bacteria that penetrated the surfaces to a depth of 3 mm.

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*

The views expressed herein are those of the authors and do not necessarily reflect the views of the United States Air Force or the Department of Defense.

Presented before the Annual Meeting of the American Association of Dental Research, San Antonio, Tex., March 1995.

d

Dental Laboratory.

c

Analytical Research Laboratory.

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