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n Evidence Based Summaries in Dentistry - High-viscosity glass-ionomer cements versus silver amalgam as restorative materials for permanent posterior teeth
Mickenautsch S. Are high-viscosity glass-ionomer cements inferior to silver amalgam as restorative materials for permanent posterior teeth? A Bayesian analysis. BMC Oral Health. 2015 Oct 8;15(1):118. The term 'high-viscosity' or 'high-viscous glass-ionomer cement' (HVGIC) has emerged within the scientific dental literature and is related in clinical studies specifically to the products Fuji IX (GC Corporation, Japan) or Ketac Molar (3M ESPE, Germany). A definition of HVGICs in line with chemical characteristics such as the powder - liquid ratio or its compressive strength in comparison to other chemically cured glass-ionomers appears difficult due to contradictive in-vitro evidence. However, HVGICs appear distinct from other (low) viscosity glass-ionomers (including Cermets) in their comparative clinical survival rate to that of conventional amalgam restorations. Meta-analysis results indicate a survival rate for HVGIC (Fuji IX; Ketac Molar) tooth restorations similar to that of amalgam but show significantly lower survival rates for "low-viscosity" GICs (Chelon Silver (= Cermet); Chem Fil; Fuji II) than for amalgam.
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