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stain |
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stainColoured 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Both extrinsic stains (those that appear on the surface of the teeth) and intrinsic stains that form on the teeth''s interior can be good candidates for the right teeth whitening system. Teeth may stain because of intrinsic stains or due to independent factors. Bleaching products contain peroxide which not only removes surface or extrinsic discoloration but also the acts to penetrate the deep or intrinsic stains. |
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