Effectiveness of the GentleWave System in removing separated instruments

Pierre Wohlgemuth, Davide Cuocolo, Prashanthi Vandrangi, Asgeir Sigurdsson

Research output: Contribution to journalArticle


Introduction A separated instrument in a root canal system has the potential of severely affecting the outcome of endodontic therapy. This study evaluated the effectiveness of the minimally invasive GentleWave System (Sonendo Inc, Laguna Hills, CA) in removing separated stainless steel endodontic files from the apical and midroot regions of molar root canals. Methods Thirty-six extracted human molars were accessed, and the glide path was confirmed to the apex. ISO #10, #15, and #20 K-file fragments of 2.5-mm length were separated at the apical (n = 18) or midroot (n = 18) region of the molars by engaging a weakened file with downward pressure. During analysis, the teeth were divided into 2 curved groups based on the curvature of the root (30°). The success rate of instrument removal and the treatment time were noted. Statistical comparison was done with the Fisher exact test and independent 2-sample t test (P

Original languageEnglish (US)
Pages (from-to)1895-1898
Number of pages4
JournalJournal of Endodontics
Issue number11
Publication statusPublished - Nov 1 2015



  • File separation
  • GentleWave System
  • Multisonics Ultracleaning
  • steel hand files

ASJC Scopus subject areas

  • Dentistry(all)

Cite this