A Structured Review of Different Rotary Instumentation - A Decade Long Reference Analysis

The history of endodontics has always been marked by the search for faster, safer and more efficient procedures that will keep two common objectives and continue to be the cornerstone of any dental treatment: duct conformation and disinfection. Close and curved root canals pose a challenge, even if the professional has a long experience, given the impossibility of achieving the aforementioned objectives with the certainty of not breaking the instrument or generating an iatrogeny in the tooth. Recently, a new metal alloy, made of nickel titanium (Ni-Ti), has been developed in endodontics thanks to its excellent properties of flexibility, torsion resistance and memory in terms of its shape. This novel system consists of a variety of files made as we say in nickel titanium, which are more flexible than those of traditionally used stainless steel, which avoids or try to avoid fractures inside the duct. This type of rotary instrumentation constitutes or represents the third generation in the improvement and simplification of the treatment of the root canal, being considered a new era accepted and contrasted in the daily activity of the dentist. We call it rotational instrumentation by the type of conformation that is made with instruments capable of rotating 360o inside the root canal (strawberries and limes), driven by a source of energy (low revolution) that aims to achieve the following objectives: