5 Main Points on H-File (Hedstrom File)

5 Main Points on H-File (Hedstrom File):

1. Hedstrom file is manufactured from round wire that is machined to produce spiral flutes resembling a series of intersecting cones. It resembles Wood screw or the Christmas tree.

2. It is manufactured by cutting spiral grooves into round, tapered steel wire to produce sharp cutting edges which cuts only on pulling strokes (retraction)

3. It has elevated cutting edges which face towards the handle. They are larger from tip towards handle and they cut on withdrawal stroke only.

4. Highest cutting efficiency due to positive rake angle. Cutting edges are turned in the same direction of applied force so they are very aggressive in cutting.

5. The angle between the cutting edges and the long axis of the instrument is about 60- 65°. Thus, they are designed primarily for a linear filling motion.