TRANSPARENT AND RADIO-OPAQUE RETENTION PIN
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United States of America Patent
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app pub date -
Oct 26, 2007
filing date -
Jul 30, 1999
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Abandoned
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Abstract
A dental retention pin made of composite material includes a core consisting of fibers embedded in a resin matrix. The fibers, which have a refractive index (n), are radio-opaque, and the refractive index (n') of the resin forming the matrix has a value close to that of the fibers.
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