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In vitro apical pressure created by 2 irrigation needles and a multisonic system in mandibular molars

  • Ronald Ordinola-Zapata (Division of Endodontics, Department of Restorative Sciences, School of Dentistry, University of Minnesota) ;
  • Joseph T. Crepps (Division of Endodontics, Department of Restorative Sciences, School of Dentistry, University of Minnesota) ;
  • Ana Arias (Conservative Dentistry Department, School of Dentistry, Universidad Complutense de Madrid) ;
  • Fei Lin (Division of Endodontics, Department of Restorative Sciences, School of Dentistry, University of Minnesota)
  • Received : 2020.10.26
  • Accepted : 2020.12.27
  • Published : 2021.02.28

Abstract

Objectives: The aim of this study was to evaluate the apical pressure generated by 2 endodontic irrigation needles and the GentleWave system in mandibular molars. Materials and Methods: The mesial and distal root canals of 12 mandibular molars were irrigated with a 30-gauge close-end needle or with a 30-gauge open-end needle. Procedures were performed in the mesial and distal canals. The GentleWave procedure and irrigation at 1 mm from the apex in the distal roots using an open-end needle were used, respectively, as negative and positive controls. The apical pressure was measured using a data acquisition pressure setup. Apical pressure exerted by the different needles in the 2 different canal types was statistically compared using 2-way analysis of variance. Results: Significant differences were found in the apical pressure for both needles and the canal type. The lowest values were obtained with close-end needles and in mesial canals. Negative apical pressure values were obtained using GentleWave. Conclusions: The needle and the canal type influenced the apical pressure. The GentleWave procedure produced negative apical pressure.

Keywords

References

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