4 Important Points on K-Flex File (D-Type File)

4 Important Points on K-Flex File (D-Type File) are mentioned below:

1. K-flex file was introduced by Kerr manufacturing company in 1982. The main purpose of developing this file is to increase the flexibility and cutting efficiency while maintaining the shape of canals, especially curved canals.

2. They are rhomboid or diamond shaped in cross-section. Angle at the tip is 25°-50°. It is fabricated from V-4 steel and made from stainless steel by twisting D/A cross section.

3. It has series of cutting flutes with alternate sharp (<60°) and obtuse non cutting edges. The two acute angles which increase the sharpness and two obtuse angles give more room for efficient removal of debris and also decrease the contact of instrument with canal walls.

4. It has greater cutting efficiency, increased flexibility and, because of increased space between the working edges acting as a reservoir, it has increased ability to remove debris.