Thursday, January 04, 2007

US Patent 7156911 - Dental Nanoparticles

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