What is the difference between an endodontic file and a hedstrom file?

File = File: A hedstrom file is one type of endodontic file.

They are: A hedstrom file is a type of endodontic file. It has a more agressive cutting angle than other types known as k- files.

File design: There are literally hundreds of different file designs used in endodontics. A hedstrom is one kind of file. It is a hand-driven file that is unique in its cross section. Other files may differ in their shape (cross section), metal, or could be engine-driven.

K-file vs H-file: The most common endodontic file is the k-file. It has a square or triangle cross section and is twisted from a stainless steel blank. H-file on the other hand is machined and has a teardrop shape cross section. Do a google search if you want to find out more.