The Concept of the Self Adjusting File in Endodontics

Zakarea, Nawfal

	The Concept of the Self Adjusting File in Endodontics
Sulaimani Dental Journal
Article 9, Volume 4, Special Issue, 2017, Pages 9-9 PDF (23.32 K)
Author
Nawfal Zakarea
Abstract
Background: A primary aim of root canal treatment is to completely clean and shape the root canal system. There are three main classifications of root canal preparations: first, the conventional root canal preparation technique; second, the minimally invasive endodontic preparation; and third, the non-cutting preparation technique. The standardized system was used for many years and required each instrument, file or reamer, to be placed to the full working length. The canal was enlarged until clean white dentine shavings were seen on the apical few millimeters of the instrument. Minimally invasive endodontics (MIE) aims to preserve the maximum amount of tooth structure during root canal therapy. In the last 15 years there has been rapid progress and development in endodontics, making treatment procedures safer and more conservative. One of the instruments now used is the self-adjusting file (SAF) which is a new concept for cleaning and shaping of the root canal, and was developed to overcome the inherent remaining problems of the nickel-titanium instruments. In flat-oval or tear-drop shaped root canals, it may be difficult to instrument the entire wall of oval canals with rotary file systems and they often fail to adequately clean and shape the canal. Aim of study: The purpose of this talk is to explain the concept of minimally invasive root canal preparation, including the SAF and the advantages, disadvantages and principles relating to its use. Conclusion: The SAF improves the biomechanical preparation of root canal and it can be considered as a promising and minimally invasive instrumentation technique, although along with its advantages it still has some shortcomings in comparison with conventional methods.

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