RaCe , Protaper files , K3 files

RaCe

Ø  Heraeus Kulzer introduced this new system

Ø  RaCe {Reamers with alternate cutting edge}.

Ø  Available in  2% , 4% , 6% , 8%  or 10% taper.

Ø  Non cutting tip for guidance.

Ø  The triangular cross section and alternative cutting edges ensures efficient evaluation of chips and cutting debris.

ProTaper  FILES

• Consist of -

I.   3 shaping files: SX, S1 & S2.

II.  3 finishing files: F1, F2&F3

• Available in 21 & 25mm lengths
• Used with utilized in gear reduction, high torque, electric hand pieces at speeds ranging from 250 to 300 rpm.
• Convex triangular cross section

K3  FILES

Ø  Available in two tapers:

1. 0.04 – green colour
2. 0.06 – orange colour

Ø  Advantages 

1.  Safe ended tip.

2.  Positive rake angle:

l  Slight positive cutting angle – cutting

l  Profiles, other conventional – negative angle – scraping.

3.  Wide radial angle provides more mass at core so less chances of fracture.

4.  Access handle:

l  Short handle for better access in posterior teeth.

5.  Simplified colour coding