The Effectiveness of Sonic-Activated Irrigation in Reducing Intratubular Enterococcus faecalis

Area of Science:

• Endodontics
• Microbiology

Background:

• Bacterial biofilm removal is crucial for endodontic treatment success.
• Enterococcus faecalis is a common pathogen in persistent root canal infections.
• Effective irrigation techniques are vital for disinfecting root canal systems.

Purpose of the Study:

• To compare the efficacy of sonic activation versus syringe irrigation of sodium hypochlorite in removing Enterococcus faecalis biofilm.
• To evaluate the reduction of viable bacteria within root canals using different irrigation methods.

Main Methods:

• Extracted human incisors were prepared and contaminated with E. faecalis.
• Groups included syringe irrigation, sonic activation (Endo Activator), and a negative control.
• Colony forming units (CFU) and bacterial viability were assessed post-treatment.

Main Results:

• Both irrigation techniques significantly reduced CFU counts.
• No significant difference was found between sonic activation and syringe irrigation for CFU reduction.
• Sonic activation significantly reduced viable bacteria compared to syringe irrigation and the control group.

Conclusions:

• The Endo Activator system demonstrated greater success in reducing intratubular viable bacteria.
• Sonic activation is a more effective method for eliminating viable bacteria in root canals compared to conventional syringe irrigation.