Stainless steel files are not elastic, while nickel-titanium files are flexible and are more suitable for curved root canals.
Stainless steel files have more cutting force, but less breaking resistance. Compared with the NITI-TITANIUMÂ files that have less cutting force, the files are not easy to break, which is safer. However, the cutting force of nickel-titanium files is weaker and less efficient than stainless steel files.
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