Resin composite and restoration containing bioactive glass fillers

A method of preparing a fibrous filler comprising silanized glass fibers having an average diameter of 5-100 μm and an average length of 50-2,000 μm, bioactive particles comprising hydroxyapatite disposed on a surface of the silanized glass fibers, and a silane coating that coats at least a portion of a surface of the silanized glass fibers, bioactive particles, or both, wherein the silanized glass fibers are present in an amount of 15-65 wt% relative to a total weight of the fibrous filler,

• the method comprising:
• heating precursor glass fibers in an acidic solution to form acid activated glass fibers;
• washing and drying the acid activated glass fibers to form surface activated glass fibers;
• mixing the surface activated glass fibers with an aqueous solution comprising a Ca(II) salt and NH4OH to form a first mixture;
• mixing an aqueous solution of (NH4)2HPO4 with the first mixture to form a second mixture;
• microwave irradiating the second mixture to form a third mixture;
• aging the third mixture to produce a crude fibrous filler;
• and
• treating the crude fibrous filler with a silanization agent thereby forming the fibrous filler.