The different between Hedstorm file & K file:
OR
Hedstorm better than K file due to:
OR
H file more efficient in cutting than K file:
a. More positive rank angle***
b. More negative rank angle
c. Sharp tip
d. More in width.
The H file has more cutting surface than the k file
The Hedstorm file has more than K-file:
hedstrom file has more flutes than reamer
hedstrom file is a type of k-files which has more cutting efficiency than other files
Definition of a rake angle is the angle between the leading edge of a cutting tool and a perpendicular to the surface being cut.
Examples of negative rake instruments are reamers, K-files, K-Flex files, diamond burs, most NiTi-files, and burnishing burs or regular burs run backwards.