Patent ID: 7837471
Filing Date: 2010-11-23
Classification: A61C,A61K,Y10T

Abstract:
1. A method for restoring the root canal of a tooth comprising: preparing the root canal; applying a sealant into the root canal; inserting a filling material into the canal, wherein the filling material comprises 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, and 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.