Study of the rheological properties of dental resin composites

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Study of the rheological properties of dental
resin composites
Sébastien Beun
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Experimental flowable composites

• Bis-GMA/TEGDMA 50/50

• Bis-GMA/TEGDMA 50/50
• Filled at 60 (wt) silanised dental glass
  (macrofiller) partially hydrophobic silica
  (microfiller) 57/3, 55/5 and 52/8 (wt) ( 60/0,
  50/10)

5 microfillers
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Results
Frequency sweeps
Time sweeps

• After a pre-shear of 1 s-1 during 10s

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Perspectives

• Monitoring of the filler particles organisation
  during re-structuration of the materials
• Addition of a photo-activated initiation system
• Microtome slices and SEM micrographs
• Study of the rheological properties of universal
  and packable resin composites

• Monitoring of the changes in the rheological
  properties of resin composites during the
  photopolymerisation process