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stain
(redirected from extrinsic stain)

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stain

Coloured compound that will bind to other substances. Stains are used extensively in microbiology to colour micro-organisms, in histochemistry to detect the presence and whereabouts in plant and animal tissue of substances such as fats, cellulose, and proteins, and in biochemistry to reveal the location of biomolecules, as in gel electrophoresis.
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Some extrinsic stains may be removed with ultrasonic cleaning, rotary polishing with an abrasive paste, or air-jet polishing with an abrasive powder.
A Closer Look at a Brighter Smile! by Albert Wessel / Health, general community
Extrinsic stains are on the outer surface of the tooth, whereas intrinsic stains are actually inside the tooth and they show through the surface of the tooth enamel.
Ask the Warrior Dentist Cosmetic Dentistry Why Tooth Whitening ... by Meridith Berk / Food/cooking/nutrition community
It is an excellent portable method of extrinsic stain removal or application of therapeutic agents.
Glycine powder: a new approach to air-polishing by Henry, Karoline; Piper, Renee / Access
 
 
 
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