SIZE: 20/04
FLUTES: 3
SPIRALS PER 16MM: 3.3
HELIX ANGLE: 14º [fig. 2]
CUTTING ANGLE: (-)30º [fig. 1]
DEBRIS REMOVING AREA: 22% [fig. 1]
ROTATION TO FAILURE: 470º
PEAK TORQUE AT FAILURE: 4.76 gf/cm
60 ̊ DEFLECTION: 1.42 g
PLASTIC DEFORMATION: 0º
FILE CORE AREA RELATIVE TO CIRCUMFERENCE AREA: 56%
FILE CORE AREA RELATIVE TO FILE X-SECTION AREA: 72%

DISCUSSION:

• The M-wire obviously makes a difference in enhancing its rotation
  to failure considering the file’s large x-section area relative to its circumference. However, this enhancement was accompanied with a diminished resistance to torsional failure.

  

  Tip SEM

  

  Fig. 1

  

  Fig. 2

   

   

   

   

   

   

   

  SEMs are provided by Dr. Franklin Garcia-Godoy, Professor and Senior Executive Associate Dean for Research Director, Bioscience Research Center University of Tennessee Health Science Center

   

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