Comparison of effectiveness of Reciproc, Wave One, Protaper, and One Shape rotary instruments in reduction of bacterial load in root canals


Submitted: 4 November 2019
Accepted: 27 February 2020
Published: 4 June 2020
Abstract Views: 446
PDF: 232
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Authors

  • Ali Azizi School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran, Islamic Republic of.
  • Reza Hatam Department od Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran, Islamic Republic of.
  • Parisa Soltani Dental Implants Research Center, Department of Oral and Maxillofacial Radiology, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran, Islamic Republic of. https://orcid.org/0000-0002-9273-5279
  • Shimasadat Miri Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran, Islamic Republic of.
  • Ramin Abiri Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran, Islamic Republic of.

Aim: To compare the effectiveness of Reciproc, Wave One, Protaper, and One Shape rotary instruments in reduction of E. faecalis in root canals.

Methodology: In this in-vitro study, after initial stages of canal enlargement and irrigation, a suspension containing Entrococcus faecalis was inoculated into the root canals of 84 extracted single-canal premolars. The samples (apart from 2 positive and 2 negative controls) were randomly assigned into 4 groups according to rotary instruments used: Reciproc, Wave One, One Shape, Protaper. Each group was then subdivided to 2 groups based on irrigating solutions of normal saline and NaOCl. After instrumentation, the root canals were filled with brain-heart infusion (BHI) broth. Finally bacterial colony forming units (CFU) were counted.

Results: Reduction in number of bacterial colonies before and after instrumentation and irrigation was not significantly different in different rotary instrument systems (P=0.128, F=1.955). However, NaOCl was more effective in reduction of bacterial load compared to normal saline (P<0.001, F=15.528).

Conclusions: All rotary instruments used in the study are effective in reduction of the bacterial load.


Azizi, A., Hatam, R., Soltani, P., Miri, S., & Abiri, R. (2020). Comparison of effectiveness of Reciproc, Wave One, Protaper, and One Shape rotary instruments in reduction of bacterial load in root canals. Giornale Italiano Di Endodonzia, 34(1). https://doi.org/10.32067/GIE.2020.34.01.10

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