Logo-joddd
J Dent Res Dent Clin Dent Prospects. 2017;11(2): 90-95.
doi: 10.15171/joddd.2017.017
PMID: 28748049
PMCID: PMC5519999
  Abstract View: 2412
  PDF Download: 3205
  Full Text View: 1328

Basic Research

Original Article

Effect of different nickel-titanium rotary files on dentinal crack formation during retreatment procedure

Mehmet Çitak 1, Taha Özyürek 2*

1 Department of Endodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey
2 Department of Endodontics, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey
*Corresponding Author: Email: tahaozyurek@hotmail.com

Abstract

Background. The aim of this study was to compare the dentinal defects caused by Reciproc, TF Adaptive and ProTaper Next NiTi rotary file systems during the retreatment procedure. Methods. A total of 150 mandibular incisors with straight and single root canals were included in the present study. All the root canals were prepared up to an apical diameter 0.40 mm using stainless steel files. Thirty teeth were randomly stored as the negative control group. A total of 120 specimens were obturated with gutta-percha and AH Plus sealer using vertical compaction technique. Thirty specimens with root canal filling were randomly separated for the only-filled group. Then the teeth were randomly divided into 3 groups; Reciproc, TF Adaptive and ProTaper Next. The retreatment procedure was performed with these NiTi files. Then 150 specimens were cut perpendicular to tooth axis at 3-, 6-, and 9-mm distances from the apex, and examined to determine the presence of any cracks at ×25 under a stereomicroscope. Chi-squared test was used at 5% significance level. Results. All the tested NiTi file systems were found to cause significantly more dentinal defects compared to unprepared and only-filled groups (P<0.05). No statistically significant differences were found between the groups in terms of dentinal defects (P>0.05). No correlation was found between the slice levels and the dentinal defect distribution (P>0.05). Conclusion. Within the limitations of present study, all the tested NiTi file systems were found to cause significantly more dentinal defects compared to unprepared and only-filled groups.

© 2017 Çitak and Özyürek This is an Open Access article published and distributed by Tabriz University of Medical Sciences under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
First Name
 
Last Name
 
Email Address
 
Comments
 
Security code


Abstract View: 2413

Your browser does not support the canvas element.


PDF Download: 3205

Your browser does not support the canvas element.


Full Text View: 1328

Your browser does not support the canvas element.

Submitted: 01 Jul 2015
Accepted: 06 Nov 2016
ePublished: 21 Jun 2017
EndNote EndNote

(Enw Format - Win & Mac)

BibTeX BibTeX

(Bib Format - Win & Mac)

Bookends Bookends

(Ris Format - Mac only)

EasyBib EasyBib

(Ris Format - Win & Mac)

Medlars Medlars

(Txt Format - Win & Mac)

Mendeley Web Mendeley Web
Mendeley Mendeley

(Ris Format - Win & Mac)

Papers Papers

(Ris Format - Win & Mac)

ProCite ProCite

(Ris Format - Win & Mac)

Reference Manager Reference Manager

(Ris Format - Win only)

Refworks Refworks

(Refworks Format - Win & Mac)

Zotero Zotero

(Ris Format - Firefox Plugin)