科研之友
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摘要
The toughening potential of a particle-size reduction is investigated on experimental glass ionomer cements (GICs). A reduction of the particle size results in a reduced fracture toughness. The use of bimodal particle-size distributions is proposed for the development of tough and workable cements, where small particles provide the reactive surface area and large particles are responsible for crack deflection. Characterization of a GIC-restored tooth with reference to a composite restoration by nanoindentation demonstrates the clinical relevance of the study. The elastic properties of GICs are well adapted for application in contact with dentine.
- 出版日期2010-12
