A dental glass includes: phosphorus； sodium and/or potassium； and calcium, wherein the dental glass contains, in terms of oxide, phosphorus (P 2 O 5 ) by greater than or equal to 40% by mass and less than or equal to 70% by mass, sodium and/or potassium (Na 2 O, K 2 O) by greater than or equal to 20% by mass and less than or equal to 40% by mass, and calcium (CaO) by greater than or equal to 1% by mass and less than or equal to 20% by mass, and wherein the dental glass does not substantially contain silicon and aluminum.
