Saudi Endodontic Journal | |
Effect of different separated nickel–titanium rotary instruments on apical microleakage: An in vitro study | |
article | |
Roohollah Sharifi1  Ehsan Heidarzadi1  Ehsan Azizi2  Abbasali Khademi3  Saber Khazaei1  Pedram Iranmanesh3  | |
[1] Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences;Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences;Department of Endodontics, Dental Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences | |
关键词: Dental instruments; dental leakage; Enterococcus faecalis; nickel–titanium; root canal therapy; | |
DOI : 10.4103/sej.sej_42_21 | |
学科分类:口腔科学 | |
来源: Medknow | |
【 摘 要 】
Introduction: Endodontic instrument separation is one of the iatrogenic errors which may affect the outcome of treatment. The present in vitro study was aimed to investigate the effect of different cross-sectional designs of separated nickel–titanium (Ni-Ti) rotary files on apical microleakage. Materials and Methods: A total of 48 mandibular premolar roots were selected. The samples were randomly assigned to four experimental groups including Mtwo (n = 10), HERO Shaper (n = 10), RaCe (n = 10), and FlexMaster (n = 10) as well as positive (n = 4) and negative (n = 4) control groups. Ni-Ti rotary instruments with the same size and taper (0.06, #30) were separated in the apical region after complete cleaning and shaping, and the remaining root canal was obturated with gutta-percha and AH-26 sealer. The bacterial microleakage of each group was assessed through Enterococcus faecalis for 60 days. Survival analysis was done by SPSS 22. Results: There were no statistically significant differences between the studied groups in terms of the time of microleakage (P = 0.955). Conclusion: The separated Ni-Ti rotary instruments with different cross-sectional designs had no impact on apical microleakage.
【 授权许可】
CC BY-NC-SA
【 预 览 】
Files | Size | Format | View |
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RO202307100000887ZK.pdf | 845KB | download |