Miscellaneous aluminosilicate glass cements

In 1968 Wilson published an account of his early search for alternatives to orthophosphoric acid as a cement-former with aluminosilicate glasses. Aluminosilicate glasses of the type used in dental silicate cements were used in the study and were reacted with concentrated solutions of various organic and inorganic adds. Wilson (1968) made certain general observations on the nature of cement formation which apply to all cements based on aluminosilicate glasses. 

Acid aqueous solution, % by mass Powder liquid, g cm Setting time, minutes Compressive strength (24 hour), MPa Water-leachable material, % mass 

Conventional silicate cement phosphoric acid liquid 40 3-5 272 01 

Fluoboric acid was also found to form a cement of some strength (106 MPa) but of poor hydrolytic stability. 

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