FILE NAME: EdgeFile
MADE IN: France
HEAT TREATED IN: United States by US Endo
FLUTES: 3 (triangular)
SPIRALS PER 16MM: 6
HELIX ANGLE: 26º [fig. 2]
CUTTING ANGLE: (-) 40º [fig. 1]
DEBRIS REMOVING AREA: 60% [fig. 1]
ROTATION TO FAILURE: 1002º
PEAK TORQUE AT FAILURE: 51.13 gf/cm
60 ̊ DEFLECTION: 1.62 g
PLASTIC DEFORMATION: 7º
FILE CORE AREA RELATIVE TO CIRCUMFERENCE AREA: 32%
FILE CORE AREA RELATIVE TO FILE X-SECTION AREA: 60%
- Although the file is very flexible, its resistance to torsional stress is very limited. Plastic deformation occurs with comparatively minimal force.
- The tip is blunt and will not negotiate a canal having a smaller diameter without burnishing its way into the canal and resulting in greater torsional stress.
- The large number of spirals requires debris to be conveyed a greater distance and increases the EdgeEndo’s tendency to screw into the canal. Both factors contribute to increasing torsional stress.