Filtek™ Z350 XT Flowable Restorative is a low-viscosity, visible light-cured, radiopaque flowable nanocomposite. Bonding to the tooth structure is accomplished through the use of dental adhesive systems, either total-etch or self-etch, that are designed to be compatible with methacrylate composites. Filtek Ultimate flowable restorative can be used alone, after placing a compatible adhesive, or in conjunction with a methacrylate-based restorative such as Z100™ Restorative, Filtek™ Z250 Restorative, Filtek™ P60 Restorative or Filtek™ Z350 XT Universal Restorative. The restorative is packaged in syringes. It is available in a variety of tooth-colored shades. The shades offered with Filtek Z350 XT flowable restorative were designed to coordinate with shades offered with Filtek Z350 XT universal restorative.
Indications for Use Filtek Z350 XT flowable restorative is indicated for: • Base/liner under direct restorations • Undercut blockout • Class III and V restorations • Restoration of minimally invasive cavity preparations (including small, nonstress-bearing occlusal restorations) • Repair of small defects in esthetic indirect restorations • Pit and fissure sealant • Repair of resin and acrylic temporary materials
Composition Filtek Z350 XT flowable restorative contains BisGMA, TEGDMA and Procrylat resins. The fillers are a combination of ytterbium trifluoride filler with a range of particle sizes from 0.1 to 5.0 microns, a non-agglomerated/non-aggregated surface-modified 20 nm silica filler, a non-agglomerated/ non-aggregated surface modified 75 nm silica filler, and a surface-modified aggregated zirconia/silica cluster filler (comprised of 20 nm silica and 4 to 11 nm zirconia particles). The aggregate has an average cluster particle size of 0.6 to 10 microns. The inorganic filler loading is approximately 65% by weight (46% by volume). Filtek Z350 XT flowable restorative is a modification of Filtek™Z350 Flowable Restorative based on customer needs. In a global market research study on flowable restoratives, overall esthetics and shrinkage were identified as key features that would impact product desirability. Also, many respondents believed that materials, made by the same manufacturer and utilizing similar components, work better together. The preference for flowables was determined to be growing globally. The formulation improvements of Filtek Z350 XT flowable restorative take advantage of the advancements made in filler processing and resins since the introduction of Filtek Z350 flowable restorative. The formulation was modified to improve properties, such as shrinkage, fluorescence and polish retention.