6 Key Points on S-File

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6 Key Points on S-File are:

1. S-file was developed in Sweden. It is machined from solid piece of wire to produce a sharp, double, cutting edge forming double helix design. They are stiffer than H files.

2. It is “S” shaped in cross section and has 90° cutting tip. It is available in size of 5 to 40.

3. S-file has good cutting efficiency in both filing and reaming actions and thus it is also classified as hybrid design.

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4. Angle of flute is constant and flute depth increases from tip to handle.

5. It’s no cutting sides with smoothened edges prevent ledging in curved canal.

6. Millimeter scale is etched on the shaft of the file for length control.