Corning Incorporated
BIOACTIVE SILICATE GLASSES

Abstract:

An antibacterial composition, includes: a silicate-based glass material having a composition of: 55-70 wt. % SiO.sub.2, 0-10 wt % B.sub.2O.sub.3, 3-18 wt. % P.sub.2O.sub.5, 0-10 wt. % A1.sub.20.sub.3, 0-5 wt. % Li.sub.2O, 12-30 wt. % Na.sub.2O, 0-15 wt. % K.sub.2O, 0-10 wt. % MgO, 1-15 wt. % CaO, 2-20 wt. % MO, and 15-35 wt. % R.sub.2O, such that MO is the sum of MgO, CaO, SrO, and BaO, such that R.sub.2O is the sum of Na.sub.2O, K.sub.2O, Li.sub.2O, and Rb.sub.2O, and such that the silicate-based glass material can achieve a 6-log kill rate of at least one of E. coli, P. gingivalis, or S. mutans bacteria.