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

     

4 thoughts on “ProTaper Next : Tip Evaluation (1st 3mm)

  1. Really appreciate your evaluations. Looking forward to receiving your evaluation of Edge Endo rotary files and Vortex Blue as well as regular Vortex files.

    Thank you.

    • We appreciate your appreciation! In fact, we have already posted tip evaluations of the Vortex Blue and Edge Endo. However, we will continue performing and posting evaluations as we go forward, and we will be sure to cover the Vortex as you requested. Thank you so much for your interest and for your input. Feel free to contact us any time.

    • Somehow I overlooked your comments; please accept my apologies. Thank you for drawing my attention to the Dental Tribune article. My description relied solely on the enclosed SEM. The article seems to state (please correct me if I am wrong) that the x-section changes from a square at the tip end to a rectangle toward the handle end and having a geometric center that differs from the file central axis of rotation. I sincerely hope you will continue your welcomed comments.

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