SrO-Al.sub.2O.sub.3-B.sub.2O.sub.3-SiO.sub.2-Based Glass Fillers for Dental Filling Composites

A new glass-filler for dental composites has been developed based on glass in the system SrO-Al.sub.2O.sub.3-B.sub.2O.sub.3-SiO.sub.2. This filler meets contemporary requirements for filling materials and is characterized by high chemical resistant to water, acids and alkalis (Class I), high visible-range transparency (> 80%), and CLTE-compatibility with the polymer matrix. The melting temperature is acceptable, and crystallization is not a proclivity. It is shown [demonstrated that the new glass filler effects high-level medical-biological, operational, and functional properties of the dental composite based on it, and competitiveness with respect to the popular foreign-made analog materials.