AF-R Wire technology
Specialty tip-design for bypassing ledge
Rectangular cross section
Suitable for curved canals
The most important problem in ledge treatment is to understand how ledges are formed in root canal :
All nickel-titanium instruments have both good and bad things. They are all called “memory” files.
The good thing is that the nickel-titanium file has elastic and self-adaptor. The bad thing is when
the rotating file stays at the curved root canal, it is still cutting the outer part of the bend ,and the
problem arises. The time the ledge is formed depends on the design of the file (the stronger the
cutting ability of the file, the faster the ledge formation).As the root canal tends to return to the
design shape, the ledges are formed. The use of rigid hand files in root canal preparation, or
preparation for too rush, violence may also lead to the formation of ledges.
6 Files Pack