Universal GuttaFlow System is the first and, up to the present day, only system of cold fluid (plastic) gutta-percha, a unique development of the German company Roeko, a part of the Swiss company Coltene/Whaledent. The material was developed on a base of sealer RoekoSeal that is already well-known to dentists and contains polydimethylsiloxane, which has a property of "reverse capillarity" (sealer fluidity is directly proportional to contraction of volume of space where it is placed). In addition to a sealer, the system contains fragmented gutta-percha (30 pm) and silver microparticles, giving it a number of advantages such as: high fluidity; intracanal expansion during polymerization (0,2%); high biological inertness; automatic mixing system (the material is encapsulated); high antibacterial effect; no need for further condensation. This allows the material to penetrate easily into dentinal tubules providing a reliable three-dimensional obturation of a system of micro and macro canals during treatment of complicated caries in any clinical situation. The the X-ray evaluations, 3D dental tomography evaluations, scanning electron microscopy and planar elements map was used. In addition, all this allows you to position this material as an obturative system, which is unique in the world for endodontic treatment of different groups of teeth guaranteed with the very high quality.