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. 2013 Spring;8(2):55-8.
Epub 2013 May 1.

Shaping ability of nickel-titanium rotary instruments in curved root canals

Ali Talati  1 , Saeed Moradi, Maryam Forghani, Ali Monajemzadeh
Affiliations

Shaping ability of nickel-titanium rotary instruments in curved root canals

Ali Talati et al. Iran Endod J. 2013 Spring.

Abstract

Introduction: Disinfection and subsequent obturation of the root canal space require adequate mechanical enlargement of the canals. The purpose of this in vitro study was to compare the shaping ability of Mtwo, RaCe and Medin rotary instruments during the preparation of curved root canals.

Materials and methods: Sixty mesiobuccal root canals of mandibular molars with severe curvatures between 25-35(°) and radius of 4-9 mm were randomly divided into three groups of 20 canals each. Using pre- and post-instrumentation radiographs, straightening of the canal and the apical transportation were determined with AutoCAD software. The data were analyzed using Chi square, analysis of variance, and post-hoc tests and the significance level was set at P<0.05.

Results: Mtwo instruments maintained the canal curvature significantly better than Race and Medin instruments (P<0.05). There was significant difference between the rotary instruments for iatrogenic transportation of the major foramen (P>0.05).

Conclusions: Under the conditions of this in vitro study, Mtwo instruments seemed superior to the two other rotary instruments.

Keywords: Dental Instruments; NiTi Alloy; Root Canal; Root Canal Preparation.

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Conflict of interest statement

Conflict of Interest: None declared.

References

    1. Williamson AE, Sandor AJ, Justman BC. A comparison of three nickel titanium rotary systems, EndoSequence, ProTaper universal, and profile GT, for canal-cleaning ability. J Endod. 2009;35(1):107–9. doi: 10.1016/j.joen.2008.09.022. - DOI - PubMed
    1. Schilder H. Cleaning and shaping the root canal. Dent Clin North Am. 1974;18(2):269–96. - PubMed
    1. Garala M, Kuttler S, Hardigan P, Steiner-Carmi R, Dorn S. A comparison of the minimum canal wall thickness remaining following preparation using two nickel-titanium rotary systems. Int Endod J. 2003;36(9):636–42. - PubMed
    1. Peters OA. Current challenges and concepts in the preparation of root canal systems: a review. J Endod. 2004;30(8):559–67. - PubMed
    1. Hülsmann M, Peters OA, Dummer PM. Mechanical preparation of root canals: shaping goals, techniques and means. Endodontic Topics. 2005;10(1):30–76.

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