Journal of Conservative Dentistry

REVIEW ARTICLE
Year
: 2014  |  Volume : 17  |  Issue : 5  |  Page : 401--419

The self-adjusting file (SAF) system: An evidence-based update


Zvi Metzger 
 Department of Endodontology, School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel

Correspondence Address:
Zvi Metzger
Department of Endodontology, School of Dental Medicine, Tel Aviv University, Tel Aviv
Israel

Current rotary file systems are effective tools. Nevertheless, they have two main shortcomings:
  1. They are unable to effectively clean and shape oval canals and depend too much on the irrigant to do the cleaning, which is an unrealistic illusion
  2. They may jeopardize the long-term survival of the tooth via unnecessary, excessive removal of sound dentin and creation of micro-cracks in the remaining root dentin.
The new Self-adjusting File (SAF) technology uses a hollow, compressible NiTi file, with no central metal core, through which a continuous flow of irrigant is provided throughout the procedure. The SAF technology allows for effective cleaning of all root canals including oval canals, thus allowing for the effective disinfection and obturation of all canal morphologies. This technology uses a new concept of cleaning and shaping in which a uniform layer of dentin is removed from around the entire perimeter of the root canal, thus avoiding unnecessary excessive removal of sound dentin. Furthermore, the mode of action used by this file system does not apply the machining of all root canals to a circular bore, as do all other rotary file systems, and does not cause micro-cracks in the remaining root dentin. The new SAF technology allows for a new concept in cleaning and shaping root canals: Minimally Invasive 3D Endodontics.



How to cite this article:
Metzger Z. The self-adjusting file (SAF) system: An evidence-based update.J Conserv Dent 2014;17:401-419


How to cite this URL:
Metzger Z. The self-adjusting file (SAF) system: An evidence-based update. J Conserv Dent [serial online] 2014 [cited 2020 Nov 27 ];17:401-419
Available from: https://www.jcd.org.in/article.asp?issn=0972-0707;year=2014;volume=17;issue=5;spage=401;epage=419;aulast=Metzger;type=0