| abstract |
PROBLEM TO BE SOLVED: To provide a dental filling glass which can be used as a filler in a dental composition, which is required for the dental composition to have X-ray contrast, transparency, and sustained release of fluorine. The present invention provides a dental filling glass capable of imparting durability, abrasiveness and abrasion resistance, and a dental composition containing the glass particles. SOLUTION: Si as an element forming a glass skeleton, A fluorine-containing boroaluminosilicate glass containing B and Al, which is composed of SiO 2 , B 2 O 3 , Al 2 O 3 , P 2 O 5 , Be Glass composition containing O, MgO, CaO, X-ray contrast element oxide, alkali metal oxide and F (based on oxide) And the molar ratio (based on the oxide) of Si, B and Al elements forming the glass skeleton is Al 2 O 3 : SiO 2 : B 2 O 3 = 1.00: 1.50 2.50: dental filling glass in the range of 0.50 to 1.50. A dental composition comprising the glass particles. |