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Dental composite resins (better referred to as "resin-based composites" or simply "filled resins") are dental cements made of synthetic resins. Synthetic resins evolved as restorative materials since they were insoluble, of good tooth-like appearance, insensitive to dehydration, easy to manipulate and inexpensive.
Composite resin fillings (also called white fillings) are a mixture of nanoparticles [19] [20] [21] or powdered glass and plastic resin, and can be made to resemble the appearance of the natural tooth. Although cosmetically superior to amalgam fillings, composite resin fillings are usually more expensive.
A 2003 study showed that fillings have a finite lifespan: an average of 12.8 years for amalgam and 7.8 years for composite resins. [20] Fillings fail because of changes in the filling, tooth or the bond between them. Secondary cavity formation can also affect the structural integrity the original filling.
[24] 5 Direct composite veneer restorations where the whole labial surface is covered with resin, are good treatment options in such cases.,6 [25] The conventional workflow sequence of a direct composite veneer is: Determine if composite veneers is the best option for the patient.
Opposed to this, direct composite filling pastes shrink a few percent in volume during hardening. This can lead to shrinkage stress and rarely to marginal gaps and failure. Although improvements of the composite resins could be achieved in the last years, solid inlays do exclude this problem. [3]
Composite resin crowns, also called strip crowns, are made by curing composite resin within a clear plastic mold over a prepared tooth. [1] [2] They are widely used for restoring the primary anterior teeth (e.g. due to early childhood caries) and discolored teeth. These crowns are aesthetic, affordable, and conservative, requiring minimal ...