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HOME > Restor Dent Endod > Volume 30(5); 2005 > Article
Original Article A comparative study of the canal configuration after shaping by protaper rotary and hand files in resin simulated canals
In-Seok Yang1, In-Chol Kang2, Yun-Chan Hwang1, In-Nam Hwang1, Won-Mann Oh1
2005;30(5):-401.
DOI: https://doi.org/10.5395/JKACD.2005.30.5.393
Published online: September 30, 2005

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Corresponding author: Won-Mann Oh. Department of Conservative Dentistry, School of Dentistry, Chonnam National Universtiy, 8 Hak-dong, Dong-gu, Gwangju, Korea 501-757. Tel: 82-62-220-4431, Fax: 82-62-225-8387, wmoh@chonnam.ac.kr
• Received: February 22, 2005   • Revised: June 2, 2005   • Accepted: June 13, 2005

Copyright © 2005 Korean Academy of Conservative Dentistry

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  • The purpose of this study was to compare the canal configuration after shaping by ProTaper rotary files and ProTaper hand files in resin simulated canals.
    Forty resin simulated canals with a curvature of J-shape and S-shape were divided into four groups by 10 blocks each. Simulated root canals in resin block were prepared by ProTaper rotary files and ProTaper hand files using a crown-down pressureless technique. All simulated canals were prepared up to size #25 file at end-point of preparation. Pre- and post-instrumentation images were recorded with color scanner. Assessment of canal shape was completed with an image analysis program. Measurements were made at 0, 1, 2, 3, 4, 5, 6 and 7 mm from the apex. At each level, outer canal width, inner canal width, total canal width, and amount of transportation from original axis were recorded. Instrumentation time was recorded. The data were analyzed statistically using independent t-test.
    The result was that ProTaper hand files cause significantly less canal transportation from original axis of canal body and maintain original canal configuration better than ProTaper rotary files, however ProTaper hand files take more shaping time.
  • Keywords: ProTaper; Ni-Ti rotary file; Ni-Ti hand file; Simulated resin canal
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Figure 1
A and B diagrams indicate the points at which the canal widths were measured after superimposition of pre-instrumentaion and post-instrumentaion images.
jkacd-30-393-g001.jpg
Figure 2
Changes in outer canal width of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files.
*: significant difference (p < 0.05).
jkacd-30-393-g002.jpg
Figure 3
Changes in outer canal width of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files.
**: significant difference (p < 0.01).
*: significant difference (p < 0.05).
jkacd-30-393-g003.jpg
Figure 4
Changes in inner canal width of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files.
**: significant difference (p < 0.01).
*: significant difference (p < 0.05).
jkacd-30-393-g004.jpg
Figure 5
Changes in inner canal width of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files.
**: significant difference (p < 0.01).
*: significant difference (p < 0.05).
jkacd-30-393-g005.jpg
Figure 6
Changes in total canal width of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files.
**: significant difference (p < 0.01).
*: significant difference (p < 0.05).
jkacd-30-393-g006.jpg
Figure 7
Changes in total canal width of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files.
**: significant difference (p < 0.01).
jkacd-30-393-g007.jpg
Figure 8
Amounts of transportation from the original axis of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. Minus values indicate that axis of canal was transported to inner side curvature after canal preparation.
**: significant difference (p < 0.01).
*: significant difference (p < 0.05).
jkacd-30-393-g008.jpg
Figure 9
Amounts of transportation from the original axis of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. Minus values indicate that axis of canal was transported to inner side curvature after canal preparation.
**: significant difference (p < 0.01).
*: significant difference (p < 0.05).
jkacd-30-393-g009.jpg
Figure 10
Total instrumentation time for the canal preparation at the different type of resin blocks after canal shaping by ProTaper rotary files and ProTaper hand files.
**: significant difference (p < 0.01).
jkacd-30-393-g010.jpg

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        A comparative study of the canal configuration after shaping by protaper rotary and hand files in resin simulated canals
        J Korean Acad Conserv Dent. 2005;30(5):393-401.   Published online September 30, 2005
        DOI: https://doi.org/10.5395/JKACD.2005.30.5.393
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      A comparative study of the canal configuration after shaping by protaper rotary and hand files in resin simulated canals
      Image Image Image Image Image Image Image Image Image Image
      Figure 1 A and B diagrams indicate the points at which the canal widths were measured after superimposition of pre-instrumentaion and post-instrumentaion images.
      Figure 2 Changes in outer canal width of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. *: significant difference (p < 0.05).
      Figure 3 Changes in outer canal width of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. **: significant difference (p < 0.01). *: significant difference (p < 0.05).
      Figure 4 Changes in inner canal width of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. **: significant difference (p < 0.01). *: significant difference (p < 0.05).
      Figure 5 Changes in inner canal width of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. **: significant difference (p < 0.01). *: significant difference (p < 0.05).
      Figure 6 Changes in total canal width of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. **: significant difference (p < 0.01). *: significant difference (p < 0.05).
      Figure 7 Changes in total canal width of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. **: significant difference (p < 0.01).
      Figure 8 Amounts of transportation from the original axis of J-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. Minus values indicate that axis of canal was transported to inner side curvature after canal preparation. **: significant difference (p < 0.01). *: significant difference (p < 0.05).
      Figure 9 Amounts of transportation from the original axis of S-shape resin block after canal shaping by ProTaper rotary files and ProTaper hand files. Minus values indicate that axis of canal was transported to inner side curvature after canal preparation. **: significant difference (p < 0.01). *: significant difference (p < 0.05).
      Figure 10 Total instrumentation time for the canal preparation at the different type of resin blocks after canal shaping by ProTaper rotary files and ProTaper hand files. **: significant difference (p < 0.01).

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      A comparative study of the canal configuration after shaping by protaper rotary and hand files in resin simulated canals
      Restor Dent Endod : Restorative Dentistry & Endodontics
      © The Korean Academy of Conservative Dentistry.
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