US Patent 7156911 - Dental Nanoparticles
http://www.freepatentsonline.com/7156911.pdf
There is some interest in using nanoparticles for dental adhesive. This patent from 3M claims:
1. A hardenable dental composition comprising: (a) a polyacid; (b) an acid-reactive filler; (c) at least 15 weight percent of a nanofiller or combination thereof, each nanofiller having an average particle size of at most 200 nanometers; and (d) water.
which is similar to an earlier patent from Dentsply DeTrey GmbH
http://www.freepatentsonline.com/7041709.pdf
There is some interest in using nanoparticles for dental adhesive. This patent from 3M claims:
1. A hardenable dental composition comprising: (a) a polyacid; (b) an acid-reactive filler; (c) at least 15 weight percent of a nanofiller or combination thereof, each nanofiller having an average particle size of at most 200 nanometers; and (d) water.
which is similar to an earlier patent from Dentsply DeTrey GmbH
http://www.freepatentsonline.com/7041709.pdf
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