All flowables are not created equal. For that matter, all resins in a typical flowable syringe should not be considered flowable composites. At one point, flowable composites were essentially the duct tape of dentistry and were used to fill small voids, act as liners, or repair provisional restorations. Today, we have materials that happen to come in a flowable syringe that are rivaling the physical properties of traditional nano-hybrid paste type composites.
The latest advancement is GC America’s G-aenial Universal Injectable. It has a high load of ultra-fine barium particles (69% by weight) so it can be placed into occlusion and does not need any kind of capping layer. Even with this high load, the extrusion force is favorable, so the material can be easily placed in Class I to Class V restorations.
Historically, one concern with flowable type materials was their poor wear properties. GC uses ultra-fine fillers at 150 nm that are well bonded to the resin matrix. In addition, this ultra-fine filler size allows for easy polishing, while gloss retention is reported to be in alignment with traditional paste composites. The complete system also uses a long bendable tip for easy access to posterior restorations. This is especially helpful when trying to gain access to a line angle that needs restored.
One significant improvement GC has made to this resin versus some of its prior flowable type composites is its increased radiopacity. The radiopacity is 252% of aluminum, making it easy to distinguish dentin versus caries. While it happens to come in a flowable like syringe, GC’s G-aenial Universal Injectable is truly leading a new category of injectable restorative materials. This material most definitely fills a need in most restorative offices.
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