FIELD: medicine, pharmacy.
SUBSTANCE: group of inventions refers to materials based on treated silicon dioxide, as well as to methods for manufacture of such materials. The method for material preparation based on thermally treated silicon dioxide comprises thermal treatment of the material based on precipitated metal-containing silicon dioxide wherein the metal has a Mohs hardness value of at least 5.5 in the form of oxide. The metal material comprises aluminum or tin. Thermal processing involves heating of material based on precipitated silicon dioxide at a temperature of 400°C during about 8 hours. The resulting material is characterized by loss on ignition of less than 3% by weight at 900°C. Einlehner attrition value is 90 - 450% greater than the Einlehner attrition value for material based on precipitated silicon dioxide.
EFFECT: invention provides an effective means for teeth cleaning.
24 cl, 4 tbl, 2 ex
