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:: Volume 4, Issue 1 (March- 2015) ::
Caspian J Dent Res 2015, 4(1): 30-36 Back to browse issues page
Comparative evaluation of fracture and defect in reciproc and rotary files in severe curved root canals
Mahdis Bagherian, Abbas Mesgarani *, Sina Haghanifar , Ali Soleymani , Sina Mirzaeerad , Soraya Khafri , Maryam Ehsani
,Dental Materials Research Center, Department of Endodontics, Faculty of Dentistry, Babol University of Medical Sciences, Babol-Iran. , a_mesgarani@yahoo.com
Abstract:   (8504 Views)

Introduction: Root canal instrumentation is an important phase in root canal therapy. Since success in endodontic treatment depends on file defect and fracture, the aim of this study was to compare the evaluation of defect and fracture in rotary and reciproc files in severe curved root canals.

Materials & Methods: In this experimental study, 60 mesial canals of human closed apex molars with more than 30° canal curvature were randomly divided into two groups. In first group M-two rotary files number# 15, 20, and 25 and in second group R25 reciproc file were used for filing, respectively. A ×8 magnifier was applied to evaluate the defect or fracture presence in each side and if it were observed, a new file would be replaced. Therefore, the number of prepared canals with each file and fractured or defective files and the place of fracture in root canal were recorded. Kaplan Meier curve and log rank test were done by using SPSS v.22.

Results: In rotary group, seven and two files were fractured and defected, respectively and four files were fractured and no defect was observed in reciproc group. Although the mean of the number of prepared canals until fracture or defect in rotary and reciproc groups was 3.3 and 7.06, respectively, there were no significant differences between two systems. All file’s fractures occurred in apical regions .

Conclusion: The results showed that there was no significant difference in defects or fractures of rotary and reciproc systems. Reciproc instruments can be more effective than rotary ones because the root canal preparation in rotary instruments is longer than in reciproc system.

Keywords: Root canal preparation, Root canal therapy, Tooth root, Root canal
Full-Text [PDF 718 kb]   (2061 Downloads)    
Type of Study: Original Article | Subject: Endodontics
* Corresponding Author Address: Faculty of Dentistry, Babol University of Medical Sciences, Babol-Iran.
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Bagherian M, Mesgarani A, Haghanifar S, Soleymani A, Mirzaeerad S, Khafri S et al . Comparative evaluation of fracture and defect in reciproc and rotary files in severe curved root canals . Caspian J Dent Res. 2015; 4 (1) :30-36
URL: http://cjdr.ir/article-1-146-en.html


Volume 4, Issue 1 (March- 2015) Back to browse issues page
مجله تحقیقات دندانپزشکی کاسپین Caspian Journal of Dental Research
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