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Comparison of Reciproc, Wave One, Protaper, and One Shape Rotary Instruments in Reduction of Bacterial Load in Root Canals Publisher



Azizi A1 ; Hatam R2 ; Soltani P3 ; Miri S2 ; Abiri R4
Authors
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Authors Affiliations
  1. 1. School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
  2. 2. Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
  3. 3. Dental Implants Research Center, Department of Oral and Maxillofacial Radiology, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran

Source: Giornale Italiano di Endodonzia Published:2020


Abstract

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 two positive and two negative controls) were randomly assigned into four groups according to rotary instruments used: Reciproc, Wave One, One Shape, Protaper. Each group was then subdivided to two 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. © 2020 Masson SpA. All rights reserved.
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