Types of dental endo files iso#

So until you have gained a lot of confidence with these handfiles I would not recommend choosing a case that based on the pre-operative radiograph indicates the need for C+ files before starting the treatment (figure 4). Of course as always there are potential pitfalls to using a stiffer and end-cutting handfile such as transportation, ledging, or perforations. Sometimes quite slowly, but advancing none-the-less. Over and over and over and you will find the file advancing deeper. You will feel the file engage the dentin and release when you pull the file out. My suggestion would be to use this type of file in a twist and pull manner rather than a watch-winding or balanced forces technique.

We of course have 8’s, 10’s and 15’s, but the reality is that once a 6 C+ -file reaches the terminus you can then move towards the size 6, 8, 10 K-files as you continue to create the glide path. In our office we use primarily a size 6 C+ -file.

Types of dental endo files iso#

The C+ -file also comes in the same ISO sizes as standard K-files. The K-file has a triangular cross section. The stiffness is a result of the file having a square cross section which gives it more bulk in the core of the file. The C+ -file can engage the dentin much better in calcific conditions with the extra stiffness and the active cutting tip, whereas a K-file will simply just “kink” at the tip end when it hits a calcified area. In these situations we will use a C+ handfile (figure 3-Dentsply Maillefer).Ĭ+ files in general are a stiffer file with active end-cutting tip which is quite different from the standard, quite flexible and non-active cutting tips of a K-file. Even size 8 and even 6 K-file handfiles will not pass through the canal system well. A 10 handfile will not drop so easily into the canal to reach the apex without a fair amount of effort to negotiate with smaller or more active handfiles. There are cases that are overly calcified, significantly curved, or have calcific stones in the chamber and deeper in the canal system (figure 1 and 2). That would be endodontic bliss, but unfortunately it is not the reality all the time certainly not in our office. We are hopeful that every canal system we enter will allow a free-flowing drop of a 10 or 15 file to the apex without much effort.

So I figured I would write a follow-up blog on one particular hang-up can and occur while creating a glide path. However, there will certainly be times where we need to trouble shoot in real time and overcome some hurdles in this process.

The blog outlined some steps and pointers to make this process easier and predictable for regular endodontic cases. I had written a blog a couple weeks ago about creating a glide path for root canal treatment.