What is the taper of K-files?

The ISO stainless steel files on the market today include K-Flex, K-Flexofile and Hedström where the tip size and taper is standardised. ISO normed hand files have a standardised taper of 2% that equates to 0.02mm increase in diameter per mm of file.

What is the difference between K-files and Hedstrom files?

In general, K-files created zips which were wider and thus more pronounced than those produced by Hedstrom files. Wide ‘danger zones’ were also regularly created. The location of the aberrations depended largely on the original shape of the canal and in particular on the position of the beginning of the canal curve.

How do I use K Files?

Premier K-Files are used to enlarge canal after debridement with a reamer. After reamer, use a file one size smaller than the reamer so that the fragments of dentinal shavings can be carried away from the root-canal walls. Use in clockwise direction (1/4 turn only), then withdraw.

When should you discard rotary files?

This said, irrespective of the given file tip size or taper, if the file shows any wear or deformation, it should be discarded immediately.

How do you sterilize rotary files?

There are various methods to sterilize these instruments, such as dry heat sterilizer, autoclave, ethylene oxide gas, glass-bead sterilizer or hot-salt sterilizer, etc….Aims and Objectives

  1. Autoclaving.
  2. Carbon dioxide laser sterilization.
  3. Chemical sterilization (with glutaraldehyde)
  4. Glass-bead sterilization.

How do I identify h file and K file?

Hand files are classified into three categories: K-files, K-reamers, and H-files. The main differences among these files are in the design of cross-sectional shape and number of threads. K-files have a square cross-sectional shape, while K-reamers has a triangular shape.

What is the difference between reamer and K file?

K File Series are of two types: K File and K Reamer. K Reamers have a triangular cross-section with loose spirals around the flute. Reamers have 2.5 times more cutting efficiency. They have a reaming motion.

Which are the rotary endodontic files?

The Protaper System contains 8 rotary files; 3 shaping files, SX, S1 and S2, and 5 finishers (F1 to F5). Unlabelled: Crown down preparation is the most known and described technique since the introduction of Nickel Titanium (NiTi) rotary instruments in endodontics.