8Yap A, Lee C. Water sorption and solubility of resin-modified polyalkenoate cements[J].J Oral Rehabil, 1997, 24(4) :310 -314.
9Mathis R, Ferracane J. Properties of a glass-ionomer/resincomposite hybrid material [ J ]. Dent Mater, 1989, 5 ( 5 ) : 355 - 358.
10Ilie N, Hickel R. Mechanical behavior of glass ionomer cements as a function of loading condition and mixing procedure [ J ]. Dent Mater J,2007,26(4) :526 -530.