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- W4232000936 abstract "The chemistry and properties of the ionomer cements are reviewed. These cements are defined by the acid-base interaction between metal oxides or silicates with aqueous solutions of organic polymeric acids. the cements formed both from ion-leachable aluminosilicates and from zinc oxide are of practical importance and characterised by their ability to bond to active substrates under moist conditions. The polymer solutions used in these formulations tend to gel slowly over a period of several months. This phenomenon can be avoided by partial methylation of the polymer or by the use of a suitable copolymer. The role of the anoins present in the system and those, such as tartrate, added to improve rheological properties, is discussed. The nature of the bonding in these cement gels is considered in terms of ion-binding of polyanions of polyvalent cations. The function of water in the cement and hydrolysis of cations is discused. In the final section the long-term development of surface hardness and compressive strenght is reported. The modulus of elasticity and stress relaxation properties of these cements are compared to those of the brittle dental silicate cement." @default.
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- W4232000936 date "1975-09-01" @default.
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- W4232000936 title "Ionomer cements" @default.
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- W4232000936 doi "https://doi.org/10.1002/pi.4980070502" @default.
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