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HOME > Restor Dent Endod > Volume 31(1); 2006 > Article
Original Article Comparison of shaping ability of rotary Ni-Ti file systems used by undergraduates
Mun-Seong Kang, Hyeon-Cheol Kim, Bock Hur, Jeong-Kil Park
2006;31(1):-10.
DOI: https://doi.org/10.5395/JKACD.2006.31.1.001
Published online: January 31, 2006

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Corresponding Author: Jeong-Kil Park. Department of Conservative Dentistry, College of Dentistry, Pusan National University, 1-10 Ami-dong, Seo-gu, Busan, 602-739, Korea. Tel: 82-51-240-7454, jeongkil@pusan.ac.kr
• Received: July 27, 2005   • Revised: October 18, 2005   • Accepted: October 27, 2005

Copyright © 2006 Korean Academy of Conservative Dentistry

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  • The purpose of this study was to compare the shaping ability of three Ni-Ti file systems used by dental students or the experts and consequently to aid in choosing a proper systems for educational courses of dental students and beginners.
    Fifty students and ten dentists who have clinical experience over two years prepared 180 simulated root canals in resin blocks with three Ni-Ti systems; ProFile® (PF), HeroShaper® (HS), K3TM (K3).
    After preparation, the Ni-Ti files were evaluated for distortion and canal preparation time was recorded. The images of pre- and post-instrumented canals were scanned and superimposed. Amounts of increased canal widths, deviation, and centering ratio were calculated at apical 1, 3 and 5 mm levels and statistical analysis was performed.
    The results were as follows:
    1. HS showed the shortest preparation time and instrumented canal width in K3 was significantly larger than other groups (P < 0.05).

    2. At 1 and 3 mm levels, all groups had outward deviation. In student group, at the 1 mm level, PF had the least deviation (P < 0.05).

    3. In the centering ratio, the PF had the best centering ability compared to the others at 5 mm level. At 1 and 3 mm levels, HS and PF had better abilities than K3. Student group had better ratio than the expert at 3 mm level with PF (P < 0.05).

    Based on the results, it is surmised that the ProFile® is the safest and most ideal instrument for students and beginners.
  • 1. Garip Y, Gunday M. The use of computed tomography when comparing nickel-titanium and stainless steel files during preparation of simulated curved canals. Int Endod J. 2001;34(6):452-457.ArticlePubMedPDF
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Figure 1
Three representative superimposed images after instrumentation by each Ni-Ti file systems : ProFile® (Left), HeroShaper® (Mid), K3™ (Right). The three horizontal lines mean the measured levels of 1 mm, 3 mm and 5 mm.
jkacd-31-1-g001.jpg
Figure 2
Instrumented canal width and net transpo-rtation.
Net transportation = A - B
A: outward instrumented width
B: inward instrumented width
jkacd-31-1-g002.jpg
Table 1
Classification of groups
jkacd-31-1-i001.jpg
Table 2
Design of each file systems
jkacd-31-1-i002.jpg
Table 3
The instrumentation procedures of the Ni-Ti file systems
jkacd-31-1-i003.jpg
Table 4
Incidence of canal aberrations by instrument types
jkacd-31-1-i004.jpg
Table 5
The lapse of time (second) for each system (mean ± SD)

*Significantly different values are annotated with the different superscript alphabet (P < 0.05).

jkacd-31-1-i005.jpg
Table 6
Increased canal width (µm) after root canal preparation (mean ± SD)

*Significantly different values are annotated with the different superscript alphabet (P < 0.05).

jkacd-31-1-i006.jpg

Tables & Figures

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    • A comparative study of root canal shaping using protaper universal and protaper next rotary files in preclinical dental education
      Gül Çelik, Feyza Özdemir Kısacık, Emir Faruk Yılmaz, Arife Mersinlioğlu, İhsan Furkan Ertuğrul, Hikmet Orhan
      PeerJ.2019; 7: e7419.     CrossRef

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    Comparison of shaping ability of rotary Ni-Ti file systems used by undergraduates
    Image Image
    Figure 1 Three representative superimposed images after instrumentation by each Ni-Ti file systems : ProFile® (Left), HeroShaper® (Mid), K3™ (Right). The three horizontal lines mean the measured levels of 1 mm, 3 mm and 5 mm.
    Figure 2 Instrumented canal width and net transpo-rtation. Net transportation = A - B A: outward instrumented width B: inward instrumented width
    Comparison of shaping ability of rotary Ni-Ti file systems used by undergraduates

    Classification of groups

    Design of each file systems

    The instrumentation procedures of the Ni-Ti file systems

    Incidence of canal aberrations by instrument types

    The lapse of time (second) for each system (mean ± SD)

    *Significantly different values are annotated with the different superscript alphabet (P < 0.05).

    Increased canal width (µm) after root canal preparation (mean ± SD)

    *Significantly different values are annotated with the different superscript alphabet (P < 0.05).

    Table 1 Classification of groups

    Table 2 Design of each file systems

    Table 3 The instrumentation procedures of the Ni-Ti file systems

    Table 4 Incidence of canal aberrations by instrument types

    Table 5 The lapse of time (second) for each system (mean ± SD)

    *Significantly different values are annotated with the different superscript alphabet (P < 0.05).

    Table 6 Increased canal width (µm) after root canal preparation (mean ± SD)

    *Significantly different values are annotated with the different superscript alphabet (P < 0.05).


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