ProTaper Next : Tip Evaluation (1st 3mm)

ProTaperNextX2Full

DETAILS:

FILE NAME: ProTaper Next X2
COMPANY: Dentsply Tulsa Dental
MANUFACTURER: Dentsply Tulsa Dental
MADE IN: USA
WEBSITE: tulsadentalspecialties.com

 

CHARACTERISTICS:

SIZE: X2 (.25 tip/0,04-1.2 taper)
FLUTES: 4 (rectangular)
SPIRALS PER 16MM: 3
HELIX ANGLE: 18.5º [fig. 2]
CUTTING ANGLE: (-)45º [fig. 1]
DEBRIS REMOVING AREA: 46.4% [fig. 1]
ROTATION TO FAILURE: 640º (bound 5.7mm from tip)
PEAK TORQUE AT FAILURE: 10.42 gf/cm
60 ̊ DEFLECTION: 3.97 g
PLASTIC DEFORMATION: 0º
FILE CORE AREA RELATIVE TO CIRCUMFERENCE AREA: 42.9%
FILE CORE AREA RELATIVE TO FILE X-SECTION AREA: 78%

 

DISCUSSION:

  • Since the x-section is rectangular, the cutting angle meets the surface to be cut at a 45 degree angle and one might expect very little canal enlargement to occur. However, cam action resulting from the center of rotation being different from the center of mass enhances its cutting ability. Near the tip end, the file’s relatively small core area as compared to its x-sectional area and circumference, makes it more susceptible to separation (especially when sufficient torque is applied for enlargement at its midsection and handle end).

    Tip SEM

    Fig. 1

    Fig. 2

    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

     

ProTaper Gold S1 : Tip Evaluation (1st 3mm)

ProTaperGoldS1Full

DETAILS:

FILE NAME: ProTaper Gold S1
COMPANY: Dentsply Tulsa Dental
MANUFACTURER: Dentsply Tulsa Dental
MADE IN: USA
WEBSITE: tulsadentalspecialties.com

 

CHARACTERISTICS:

SIZE: S1 (0.17 tip with a progressive taper)
FLUTES: 3 (convex triangle)
SPIRALS PER 16MM: 3
HELIX ANGLE: 19.1º [fig. 2]
CUTTING ANGLE: (-)31º [fig. 1]
DEBRIS REMOVING AREA: 35.8% [fig. 1]
ROTATION TO FAILURE: 310º
PEAK TORQUE AT FAILURE: 22.35 gf/cm
60 ̊ DEFLECTION: 5.39 g
PLASTIC DEFORMATION: 0º
FILE CORE AREA RELATIVE TO CIRCUMFERENCE AREA: 54%
FILE CORE AREA RELATIVE TO FILE X-SECTION AREA: 83%

 

DISCUSSION:

  • The ProTaper series of files have tapers that are not constant along the working length making comparative testing difficult. It is worth noting that the core area relative to the file’s circumference and the file’s x-section is comparatively high when measured against all other files. That is consistent with the relative high peak torque during rotation to failure. On a negative note this feature also accounts for the small debris removal area and negative cutting angle both contributing to high torsional stress during canal enlargement.

    Tip SEM

    Tip SEM

    Fig. 1

    Fig. 2

    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

     

BioRaCe : Tip Evaluation (1st 3mm)

BioRaCeSEM_FullComposite

DETAILS:

FILE NAME: BioRaCe
COMPANY: Brasseler USA
MANUFACTURER: FKG Dentaire
MADE IN: Switzerland
WEBSITE: brasselerusadental.com

 

CHARACTERISTICS:

SIZE: 25/04
FLUTES: 3
SPIRALS PER 16MM: 3.33
HELIX ANGLES: 28.4º & 4.6º [fig. 2]
CUTTING ANGLE: (-)30º [fig. 1]
DEBRIS REMOVING AREA: 55% [fig. 1]
ROTATION TO FAILURE: 1060º
PEAK TORQUE AT FAILURE: 61.06 gf/cm
60 ̊ DEFLECTION: 4.82 g
PLASTIC DEFORMATION: 0º
FILE CORE AREA RELATIVE TO CIRCUMFERENCE AREA: 28%
FILE CORE AREA RELATIVE TO FILE X-SECTION AREA: 62%

 

DISCUSSION:

  • Note that the nearly non-spiraled sections along the working length provide an area that can become more easily spiraled when rotational torsion is applied. The result is relatively high rotation to failure but added no significant increase in peak torque. It is also important to remember that 3 rotations, once bound, only requires 0.6 seconds to fail while rotating at 300 rpm.

    Tip SEM

    Tip SEM

    Fig. 1

    Fig. 2

    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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EXO Endo File Impresses Southeastern Endodontics’ Dr. Brock

Courtesy of Matthew Brock, DDS, MSD

Courtesy of Matthew Brock, DDS, MSD

Shortly after sending him his first packs of EXO Endo files, we received this outstanding feedback from Matthew Brock, DDS, MSD of Southeaster Endodontics:

“After cleaning and shaping the canal system for this tooth I was able to feel that the apex was a size 35 to 40 with .02 tapered instruments.  After a 30/.06 EXO File went to length with great ease, I opened the apex to a 40/.02 & then followed with a 35/.06 EXO File without issue  (in a 78 degree curvature with a fulcrum pt. of curvature 8mm from the apex, the diameter of the EXO 35/06file the would be .83mm).  The EXO File is incredibly flexible when compared with other files on the market.  If you had told me I would take a 35/.06 to the apex of a MB root just a few years ago I would have imagined a hogged out canal with no flow, and in the case of this tooth I would have seen disaster written all over it.  The EXO File negotiated the canals effortlessly and will remain in my armamentarium.”

We appreciate Dr. Brock taking his time to let us know about his experience using EXO Endo files and hope you can find the time to try them for yourself. And if you feel you don’t have the time to try our files yourself, it just means you can’t afford not to.