| abstract |
A composition of restorative material, especially useful as a dental filling material, comprising finely divided inorganic filler material and polymerizable monomer components is disclosed. Said composition contains (A) from about 50 to about 95% by weight of finely divided, inorganic filler material which is safe and effective for use in a dental filling in the human body, wherein at least 50% by weight of said filler material is at least one nitride substance having a Moh's hardness of at least 7 and is selected from the group consisting of vanadium nitride, boron nitride, aluminum nitride, silicon nitride, titanium nitride and zirconium nitride, and (B) from about 50 to about 5% by weight of polymerizable monomer component capable of po- tymerizing to form a binder resin for dental filling materials. |