title: Efficiency of the Self Adjusting File, WaveOne, Reciproc, ProTaper and hand files in root canal debridement.
abstract: OBJECTIVE
  The aim of this study was to compare the canal debridement capabilities of three single file systems, ProTaper, and K-files in oval-shaped canals.
  
  
  METHODS
  Seventy-five extracted human mandibular central incisors with oval-shaped root canals were selected. A radiopaque contrast medium (Metapex; Meta Biomed Co. Ltd., Chungcheongbuk-do, Korea) was introduced into the canal systems and the self-adjusting file (SAF), WaveOne, Reciproc, ProTaper, and K-files were used for the instrumentation of the canals. The percentage of removed contrast medium was calculated using pre- and post-operative radiographs.
  
  
  RESULTS
  An overall comparison between the groups revealed that the hand file (HF) and SAF groups presented the lowest percentage of removed contrast medium, whereas the WaveOne group showed the highest percentage (P < 0.001). The ProTaper group removed more contrast medium than the SAF and HF groups (P < 0.05).
  
  
  CONCLUSIONS
  None of the instruments was able to remove the contrast medium completely. WaveOne performed significantly better than other groups.
authors.affiliation: Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye.
authors.forename: K Meltem
authors.initials: KM
authors.lastname: Topcu
authors.affiliation: Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye.
authors.forename: Ertugrul
authors.initials: E
authors.lastname: Karatas
authors.affiliation: Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye.
authors.forename: Damla
authors.initials: D
authors.lastname: Ozsu
authors.affiliation: Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Sifa University, Izmir, Turkiye.
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Ersoy
keywords: Metapex; Reciproc; WaveOne; root canal debridement; self-adjusting file