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CC BY 4.0 · Eur J Dent
DOI: 10.1055/s-0045-1810441
Original Article

Accumulated Hard-tissue Debris Removal Using Different Ultrasonic Power Settings: A Micro-CT Study

Flávia de Moura Pereira
1   Division of Endodontics, Department of Odontology, University of Taubaté – UNITAU, Taubaté, SP, Brazil
,
Kusai Baroudi 
2   Department of Clinical Sciences, College of Dentistry, Ajman University, Ajman, United Arab Emirates
3   Centre of Medical and Bio-allied Health Sciences Research, Ajman, United Arab Emirates
,
Tarun Walia
2   Department of Clinical Sciences, College of Dentistry, Ajman University, Ajman, United Arab Emirates
,
Vivek Padmanabhan
4   Department of Pediatric and Preventive Dentistry, RAK College of Dental Sciences, RAK Medical and Health Sciences University, Ras Al Khaimah, United Arab Emirates
,
Emmanuel Joao Nogueira Leal da Silva
5   Department of Endodontics – Grande Rio University (UNIGRANRIO), Duque de Caxias, Rio de Janeiro, RJ, Brazil
6   Department of Endodontics, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil
,
Carolina de Oliveira Lima
5   Department of Endodontics – Grande Rio University (UNIGRANRIO), Duque de Caxias, Rio de Janeiro, RJ, Brazil
,
Rafael Pino Vitti
1   Division of Endodontics, Department of Odontology, University of Taubaté – UNITAU, Taubaté, SP, Brazil
,
Rayana Duarte Khoury
7   Department of Restorative Dentistry, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, Brazil
,
Flávia Goulart da Rosa Cardoso
1   Division of Endodontics, Department of Odontology, University of Taubaté – UNITAU, Taubaté, SP, Brazil
7   Department of Restorative Dentistry, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, Brazil
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Abstract

Objectives

To evaluate the effectiveness of the Irrisonic Power ultrasonic tip activated at different power settings (10 and 30%) on the removal of accumulated hard-tissue debris (AHTD) from mandibular premolars using micro-computed tomography (micro-CT) analysis.

Materials and Methods

A total of 20 extracted mandibular premolars were pair-matched based on root canal morphology using micro-CT imaging. All specimens were prepared with Reciproc R25 and randomly assigned to two experimental groups (n  =  10) according to the power setting used during final irrigation: Irrisonic Power 10% or Irrisonic Power 30%. Supplementary irrigation was performed with sodium hypochlorite and EDTA. AHTD was quantified pre- and post-irrigation using standardized micro-CT analysis and ImageJ software.

Statistical Analysis

Data were statistically analyzed using the Mann–Whitney test (α  =  0.05).

Results

Both protocols significantly reduced AHTD after supplementary irrigation. The Irrisonic Power 30% group exhibited lower residual debris (0.16  ±   0.13%) than the Irrisonic Power 10% group (0.90  ±   1.16%), with a statistically significant difference (p <  0.05).

Conclusion

Supplementary irrigation with the Irrisonic ultrasonic tip at 30% power was more effective in removing AHTD than the 10% power setting.

Keywords

passive ultrasonic activation - hard-tissue debris - micro–computed tomography


Publication History

Article published online:
07 August 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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