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

Article information

Restor Dent Endod. 2005;30(4):327-334

Publication date (electronic) : 2005 July 30

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

Hyun-Ji Song , Juhea Chang ¹, Kyung-Mo Cho , Jin-Woo Kim

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 2005 January 11; Revised 2005 March 14; Accepted 2005 April 14.

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

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