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The Influence of Particle Size on the Mechanical Properties of Dental Glass Ionomer Cements
Author(s) -
Brandt Björn,
Lohbauer Ulrich,
Göken Mathias,
Durst Karsten
Publication year - 2010
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201080067
Subject(s) - materials science , nanoindentation , composite material , glass ionomer cement , particle size , fracture toughness , toughening , toughness , particle (ecology) , chemical engineering , oceanography , engineering , geology
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.