Patent ID: 7303817
Filing Date: 2007-12-04
Classification: A61C,A61K,Y10T

Abstract:
1. A filling material for cavities and root canals comprising: an inner core section comprising a first thermoplastic polymer matrix material; an outer layer of material disposed on and surrounding the inner core section, wherein the outer layer of material comprises a second thermoplastic polymer matrix material; wherein the filling material has a bond strength when bonded to a root canal sealant equal to or greater than about 3 MPa; wherein the first and second thermoplastic polymeric matrices optionally comprise a bioactive filler; wherein the first thermoplastic polymer matrix material and the second thermoplastic polymer matrix material comprise polymers having different melt flow indices; and wherein the polymer in the first thermoplastic polymer matrix has a lower melt flow index than the polymer in the second thermoplastic matrix.