3 by weight water and most preferably at least about 5 by weight water just prior to use the total dental composition preferably includes at most about 35 by weight water and more preferably at most about 25 by weight water in general the amount of water used should be sufficient to provide adequate handling and mixing properties for the dental composition and to permit the transport of ions in the acid reactive filler polyacid reaction particularly the treated fas glass polyacid reaction dental pastes disclosed in the present application including an acid reactive filler disposed in the resin wherein the filler includes a silane treated surface and wherein the silane includes a poly alkylene oxide group containing silane have especially desirable handling e g theological properties in an unhardened state and high strength in a hardened state strength can be characterized by mechanical measurements such as compressive strength cs and diametral tensile strength dts high compressive strength in a dental material is advantageous due to the forces exerted by mastication on dental repairs replacements and restorations diametral tensile strength indicates the dental material 39 s ability to withstand compression forces that introduce a tensile stress in the material tests for each strength measurement are set out below in the examples the dental pastes disclosed in the present application when hardened preferably have a compressive strength of at least about 60 mpa more preferably a compressive strength of at least about 80 mpa and most preferably a compressive strength of at least about 90 mpa.