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Harvesting and Disaggregation: An Overlooked Step in Biofilm Methods Research
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Published on: April 22, 2022

Final rinse optimization: influence of different agitation protocols.

Raffaele Paragliola1, Vittorio Franco, Cristiano Fabiani

  • 1Department of Endodontics and Restorative Dentistry, University of Siena, Siena, Italy.

Journal of Endodontics
|February 2, 2010
PubMed
Summary

Ultrasonic agitation significantly enhances endodontic irrigant penetration into dentinal tubules, particularly in the apical third. This method improves the effectiveness of root canal cleaning compared to other agitation techniques.

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Area of Science:

  • Endodontics
  • Dental Materials Science

Background:

  • Effective root canal irrigation is crucial for eliminating microorganisms and debris.
  • Penetration of irrigants into dentinal tubules remains a challenge in endodontic treatment.

Purpose of the Study:

  • To evaluate the impact of various root canal irrigant agitation protocols on irrigant penetration into dentinal tubules.
  • To compare the efficacy of sonic and ultrasonic agitation with traditional methods.

Main Methods:

  • Human single-rooted teeth were instrumented and irrigated with 5% sodium hypochlorite containing alizarin red.
  • Seven agitation groups were tested: no agitation, K-file, gutta-percha, sonic (EndoActivator, Plastic Endo), and ultrasonic (Satelec, EMS).
  • Irrigant penetration was assessed using fluorescence microscopy at apical, middle, and coronal sections.

Main Results:

  • Ultrasonic agitation (EMS and Satelec) demonstrated superior irrigant penetration compared to sonic agitation and manual techniques.
  • The EMS group showed the highest irrigant penetration at 1 mm from the apex.
  • No significant difference was observed between Satelec and EMS groups at 1 mm from the apex.

Conclusions:

  • Ultrasonic agitation is highly effective in enhancing irrigant penetration into dentinal tubules.
  • The findings support the clinical use of ultrasonic devices for improved root canal disinfection, especially in the apical region.