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VOLUME 9 , ISSUE 4 ( July-August, 2018 ) > List of Articles

ORIGINAL RESEARCH

Comparison of Canal Transportation and Centering Ability of Rotary I-Race and BT-Race Systems using Cone Beam Computed Tomography: An in vitro Study

Asok Mathew, Zahraa M Ali, Ghaya Y Almadhani, Ahmed Al Radeideh, Ahmed J Taleb

Keywords : Apical transportation, Centering ability, Cone beam computed tomography, Rotary system

Citation Information : Mathew A, Ali ZM, Almadhani GY, Radeideh AA, Taleb AJ. Comparison of Canal Transportation and Centering Ability of Rotary I-Race and BT-Race Systems using Cone Beam Computed Tomography: An in vitro Study. World J Dent 2018; 9 (4):297-303.

DOI: 10.5005/jp-journals-10015-1552

License: CC BY-SA 4.0

Published Online: 01-08-2018

Copyright Statement:  Copyright © 2018; The Author(s).


Abstract

Aim: The aim of the present study was to compare the canal transportation and centering ability of Rotary I-Race and BT-Race systems using cone beam computed tomography (CBCT) in curved root canals (40°) to find better instrumentation technique for maintaining root canal geometry. Materials and methods: Thirty endodontic training blocks, with angle of curvature 40°, were selected into two groups of 15 samples each: BT-Race (group I), I-Race (group II). The blocks were placed in mold made by silicon impression material to facilitate instrumentation and to enable the reproducibility of pre- and postoperative CBCT images. Preinstrumentation and postinstrumentation images were obtained at three levels, 1, 3, and 5 mm above the apical foramen and were compared using CBCT software. Amount of transportation and centering ability were assessed. The two groups were statistically compared with one-way analysis of variance (ANOVA). Results: The mean transportation for group I at 1, 3, and 5 mm apical was 0.160, 0.080, and 0.046 mm respectively. The mean transportation for group II at 1, 3, and 5 mm apical was -0.096, 0.050, and -0.080 mm respectively. The mean centering ratio for group I at 1, 3, and 5 mm apical was 0.401, 0.481, and 0.533 mm respectively. The mean centering ratio for group II at 1, 3, and 5 mm apical was 0.428, 0.540, and 0.598 mm respectively. Conclusion: Under the condition of this study, the two groups showed significant difference and it was found that BT-Race files (group I) have better centering ability and less canal transportation than I-Race (group II). Clinical significance: The CBCT study will be a more accurate way of estimation of centering ability and canal transportation and hence, will reduce the clinical complications while performing biomechanical preparations.


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