EdgeEndo : Tip Evaluation (1st 3mm)

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DETAILS:

FILE NAME: EdgeFile
COMPANY: EdgeEndo
MANUFACTURER: MicroMega
MADE IN: France
HEAT TREATED IN: United States by US Endo
WEBSITE: edgeendo.com

 

CHARACTERISTICS:

SIZE: 25/04
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%

 

DISCUSSION:

  • 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.

 

TIP SEM

Fig. 1 : TIP X-SECTION

Fig. 2

 

 

 

 

 

 

 

 

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3 thoughts on “EdgeEndo : Tip Evaluation (1st 3mm)

  1. John,
    My understanding is that EdgeEndo files are manufactured in Johnson City, TN. This is the company founded by Charles Goodis.
    Keep up the file research and sharing it with me.

    John Braud

    • Dear John,
      I appreciate your post. The EdgeEndo site does state that their products are mostly manufactured in the US and that is why they are able to offer low prices. Their representative said that all of the information she had was that the files were manufactured in the US. However, when I visited the MicroMega plant in France and talked to the plant manager as well as the owner, we discussed their manufacturing of the EdgeFile but that it was heat treated in the US. I stand corrected; maybe you can get a direct answer.
      Thanks again and we look forward to your future posts.
      John

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