How to distinguish K files, H files, and C pioneer files in clinical work.

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Look at the logo on the back of the handle to tell the difference.

1. Round H file: (1) Because the H file looks like a mouse’s tail, some people call it a rat tail file. It has extremely strong cutting ability, so it is generally used for lifting up and down.

(2) How to use: Pull up and down to cut without rotating as much as possible.

(3) Precautions for use: Because the blade is sharp, do not pull it continuously in one direction, as it is easy to over-cut. When rotating, try to be as gentle as possible, and rotate when encountering resistance. Do not pull it violently, and try not to use it on roots with large curvatures.

Tube.

2. Square K file: (1) Used to open very small and curved root canals.

(2) Triangular cross-section, better elasticity than traditional K.

(3) No cutting tip and no transition angle to avoid shoulders and perforations of curved root canals.

(4), with yellow stopper.

(5), stainless steel, 6 sizes (015-040).

3. C-file Pioneer: (1) Special alloy processing technology effectively solves the problem of insufficient rigidity at the tip of small files.

(2) The 3mm tip of the file has a high hardness, which is several times the hardness of the tip of similar files, making it easy to clear calcified root canals.

(3) The back part of the file has good flexibility and can smoothly descend along the root canal wall.

(4), divided into five models: 6, 8, 10, 12, and 15, and two lengths: 21 and 25mm.

Suitable for establishing straight channels in all root canals.

There are also mixed sizes 6, 8, and 10.

(5) Pioneer files are powerful tools for root canal treatment, and VDW Pioneer files have excellent toughness and are the classic among all brands of Pioneer files.

Extended information: K file, H file, C pioneer file usage range: 1. C file, also known as pioneer file: mainly used in relatively thin root canals, or root canals with slight calcification, 2. One-third of the tip of C file

Part of it has been specially treated, and it is particularly hard and similar to K-frustration in cross section.

3. K file: Mainly used to enlarge root canals, starting from No. 8 to No. 120. The length is divided into 21MM, 25MM, 29MM and other lengths. It is also divided into hand file and machine file. It is an important part of root canal treatment.

The one that treats the most.

The most commonly used models are 21MM and 25MM No. 8, No. 10, No. 15, No. 20, No. 25 and other models. The biggest difference between H file, C file and K file is the difference in cross section. In root canal treatment, the size of H file

The cutting efficiency is the highest and the needle is most likely to break. At the same time, improper operation can also cause complications such as apical hole blockage.