| http://www.w3.org/ns/prov#value | - Examples of fillers considered for usage besides the white pigments mentioned above are metal oxides such as alumina, zirconia, tin oxide, titania, metal sulfates, dental glasses, pyrogene or precipitated silicic acids, aluminosilicate glasses, fluoroaluminosilicate glasses, quartz, strontium silicate, strontium borosilicate, lithium silicate, lithium aluminium silicate, amorphous silicic acids, p
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