Efficiency of the Self Adjusting File, WaveOne, Reciproc, ProTaper and hand files in root canal debridement

K. M. Topcu, E. Karatas, D. Oszu, and I. Ersoy

European Journal of Dentistry. 2014 July; 8(3):326-9.


OBJECTIVES: 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.

MATERIALS AND 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 radiograph.

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.


The full article is available online: ResearchGate

Topcu debridement 2014


Additional Info

  • ReDent Nova’s note:


    The results of this study show the importance of following the SAF System clinical guidelines, as well as the importance of proper design of the study.


    One factor that affected the results is the use of saline as an irrigant, while the clinical protocol for the SAF recommends using NaOCl. The use of sodium hypochlorite, with its high surface tension, would have most likely resulted in better cleaning of these canals.


    The second factor is the use of mandibular central incisors sized #20. The rotary files used in this study were sized #40, eradicating the natural morphology of the canal, thus removing the medium inside of it, while the SAF is likely to have only expanded the canal to ISO #30.

  • publisher: publisher
  • View abstract on PubMed. PMID: 25202211