Color changing matrix as wear indicator
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United States of America Patent
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May 25, 1999
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N/A
app pub date -
Oct 9, 1996
filing date -
Jun 15, 1992
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Abstract
A sustained-release matrix for dental application includes either an anti-microbial agent or a colorant that is released from the matrix when the matrix contacts water. The preferred matrices include a water-soluble polymer and a water-insoluble support resin.
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