How to distinguish K file, H file and C file in clinical work?

Look at the logo on the back of the handle.

1, h gear round:

(1) The H gear is very similar to a mouse's tail, and some people call it the rat's tail gear, which has strong cutting ability, so it is generally used to pull up and down.

(2) Usage: Pull up and down to cut, and try not to rotate.

2. Block K:

(1) is used to open very small and curved root canals.

(2) The triangular section has better elasticity than the traditional K-shaped section. ..

(3) No cutting tip and transition angle, avoiding shoulder bending and root canal perforation.

(4) With yellow stop.

(5) Stainless steel, 6 sizes (0 15-040).

3, C file pioneer:

(1) Special alloy treatment technology effectively solves the defect of insufficient rigidity of small file tip.

(2) The hardness of 3mm tip is higher, which is several times higher than that of the same file, and it is easy to dredge calcified root canals.

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

(4) It is divided into five models (No.6, No.8, 10, 12, 15) and two lengths (2 1, 25mm). It is suitable for all root canals to establish straight tubes. There are 6, 8, 10 mixtures.

(5) Pioneer file is a sharp tool for root canal therapy. VDW pioneer file has excellent toughness and is a classic among all brands.

Extended data

Common filing postures in clinical work mainly include the following:

① supine position: it is suitable for acupoints on head, face, chest and abdomen, and some acupoints on upper and lower limbs.

② Lateral decubitus position: It is suitable for taking acupoints of Shaoyang Meridian on the side of the body and some acupoints of upper and lower limbs.

③ prone position: it is suitable for acupoints on the head, neck, back and waist, and acupoints on the back of lower limbs and upper limbs.

Baidu Encyclopedia-Clinical