Effect of anticurvature filing method on preparation of the curved root canal using ProFile

Hyun-Ji Song; Juhea Chang; Kyung-Mo Cho; Jin-Woo Kim

doi:10.5395/JKACD.2005.30.4.327

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Original Article Effect of anticurvature filing method on preparation of the curved root canal using ProFile: Hyun-Ji Song, Juhea Chang¹, Kyung-Mo Cho, Jin-Woo Kim; Journal of Korean Academy of Conservative Dentistry 2005;30(4):327-334.
DOI: https://doi.org/10.5395/JKACD.2005.30.4.327
Published online: July 30, 2005

Department of Conservative Dentistry, College of Dentistry, Kangnung National University, Korea.

¹Department of Operative Dentistry, Indiana University, School of Dentistry, USA.

Corresponding author: Jin-Woo Kim. Department of Conservative Dentistry, College of Dentistry, Kangnung National University, Jibyun-Dong, Kangnung City, Kangwon-Do, Korea, 210-702. Tel: 82-33-640-3189, Fax: 82-33-640-3113, mendo7@kangnung.ac.kr

• Received: January 11, 2005 • Revised: March 14, 2005 • Accepted: April 14, 2005

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Abstract
REFERENCES

Abstract

This study investigated the effect of anticurvature filing method on preparation of the curved root canal using ProFile.

Thirty six resin blocks were divided equally into three groups by instrumentation motions: anticurvature filing motion, circumferential filing motion and straight up-and-down motion. Each resin block was sectioned at 8 mm level from the apex and at the greatest curvature of the canal and reassembled in metal mold by a modified Bramante technique. All groups were instrumented with the ProFile system. At each levels, image of sectioned surface were taken using CCD camera under a stereomicroscope at ×40 magnification and stored. Distances of transportation at the inner and outer area of curvature and the centering ratio were determined and compared by statistical analysis, along with the assessment of the increase of root canal cross-sectional area.

The results were as follows;

1. In all groups, there was no statistical difference in the mean increase of root canal cross-sectional area, the centering ratio, and the mean distances of transportation at the inner area of curvature at each level.

2. At 8 mm level from the apex, the mean distances of transportation at the outer area of curvature decreases in following order anticurvature filing motion, circumferential filing motion, straight up-and-down motion but, no significant difference at the greatest curvature of the canal among three groups.

Effect of anticurvature filing motion using ProFile does not seem to be different from other instrumentation motions at the inner area of curvature in curved root canal.
Keywords: Curved canal; Cross-sectional area; Profile; Anticurvature filing motion

REFERENCES

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Figure 1

Levels of cross-section.

a: 8 mm level from the apex

b: the greatest curvature of the canal

Table 1

Mean increase of root canal cross-sectional areas at each level in three groups (Unit: mm², Mean ± S.D.)

Table 2

Mean distances of transportation at the inner area of curvature (Unit: mm, Mean ± S.D.)

Table 3

Mean distances of transportation at the outer area of curvature (Unit: mm, Mean ± S.D.)

^*: Statistically significant difference, p < 0.05 by Scheffe test

Table 4

Mean centering ratio for each level in three group (Mean ± S.D.)

^*: Statistically significant difference, p < 0.05 by Scheffe test

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Effect of anticurvature filing method on preparation of the curved root canal using ProFile

J Korean Acad Conserv Dent. 2005;30(4):327-334. Published online July 30, 2005

DOI: https://doi.org/10.5395/JKACD.2005.30.4.327

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Figure

Effect of anticurvature filing method on preparation of the curved root canal using ProFile

Figure 1 Levels of cross-section. a: 8 mm level from the apex b: the greatest curvature of the canal

Figure 1

Effect of anticurvature filing method on preparation of the curved root canal using ProFile

Table 1

Mean increase of root canal cross-sectional areas at each level in three groups (Unit: mm², Mean ± S.D.)

Table 2

Mean distances of transportation at the inner area of curvature (Unit: mm, Mean ± S.D.)

Table 3

Mean distances of transportation at the outer area of curvature (Unit: mm, Mean ± S.D.)

^*: Statistically significant difference, p < 0.05 by Scheffe test

Table 4

Mean centering ratio for each level in three group (Mean ± S.D.)

^*: Statistically significant difference, p < 0.05 by Scheffe test

Table 1 Mean increase of root canal cross-sectional areas at each level in three groups (Unit: mm2, Mean ± S.D.)

Table 2 Mean distances of transportation at the inner area of curvature (Unit: mm, Mean ± S.D.)

Table 3 Mean distances of transportation at the outer area of curvature (Unit: mm, Mean ± S.D.)

^*: Statistically significant difference, p < 0.05 by Scheffe test

Table 4 Mean centering ratio for each level in three group (Mean ± S.D.)

^*: Statistically significant difference, p < 0.05 by Scheffe test