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. 2014 Spring;9(2):109-12.
Epub 2014 Mar 8.

Cone-beam computed tomography for evaluation of apical transportation in root canals prepared by two rotary systems

Zahra Sadat Madani  1 , Azam Haddadi  2 , Sina Haghanifar  3 , Ali Bijani  4
Affiliations

Cone-beam computed tomography for evaluation of apical transportation in root canals prepared by two rotary systems

Zahra Sadat Madani et al. Iran Endod J. 2014 Spring.

Abstract

Introduction: Due to the importance of apical transportation during root canal preparation, the aim of the current study was to use cone-beam computed tomography (CBCT) to assess the extent of apical transportation caused by ProTaper and Mtwo files.

Methods and materials: Forty extracted maxillary first molars with 19-22 mm length and 20-40 degrees of curvature were selected. The mesiobuccal canals were prepared using either Mtwo or ProTaper rotary files (n=20). CBCT images were obtained before and after canal preparation to compare the apical transportation in different cross-sections of mesial and distal surfaces. The apical transportation values were analyzed using the SPSS software. The results were compared with student's t-test and Mann-Whitney U test.

Results: There was no significant difference in the extent of apical transportation between Mtwo and ProTaper systems in different canal cross-sections. The apical transportation value was less than 0.1 mm in most of the specimens, which was clinically acceptable.

Conclusion: Considering the insignificant difference between the two systems, it can be concluded that both system have low rates of apical transportation and can be assuredly used in clinical settings.

Keywords: Apical Transportation; CBCT; Cone-Beam Computed Tomography; Imaging; Root Canal Therapy.

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