Why are flowable resin-based composites so popular?
This summary is based on the Journal of the American Dental Association Perspectives-Observations (December 2013)
Advantages of Flowable Resins
- Flowable resins also vary markedly in viscosity. Some flow almost like water when placed in tooth preparations, and others are relatively putty-like.
- All brands of flowables are less viscous than are conventional composites.
- The major reason flowables are popular is one significant singular advantage they flow.
Limitations of Flowable Resins
- The polymerization shrinkage and stress of some flowable composite brands have been shown to be more than those of conventional composites.
- Recently it has been shown that some new brands of flowables now exhibit wear characteristics similar to those of conventional composites.
- The strength of some flowables has been shown to be lower than that of conventional composites. In recent years, nanofillers and microfillers have been added to most resin-based composites—and the filler content of some newer flowables is comparable with that of conventional resins.
- Depth of resin cure of most flowables has been shown to be less than acceptable for the now in-vogue “bulk fill” technique.
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