Clinical Research Directory
Browse clinical research sites, groups, and studies.
Antibacterial Efficacy and Outcomes of Root Canal Irrigation Methods
Sponsor: National and Kapodistrian University of Athens
Summary
This randomized clinical trial aims to evaluate the antibacterial efficacy and treatment outcomes of three different final irrigation protocols during root canal therapy: 2.5% sodium hypochlorite alone, sodium hypochlorite with Passive Ultrasonic Irrigation (PUI), and sodium hypochlorite with XP-Endo Finisher activation. Sixty-six single-rooted teeth with pulp necrosis and apical periodontitis will be randomly assigned to one of the three groups. Antibacterial efficacy will be assessed through Real-Time PCR quantification of total bacterial load and four specific bacterial species before and after treatment. Treatment success will be evaluated clinically and radiographically at 6 and 12 months. The study aims to identify the most effective irrigation strategy for bacterial reduction and healing outcomes.
Key Details
Gender
All
Age Range
18 Years - 80 Years
Study Type
INTERVENTIONAL
Enrollment
66
Start Date
2025-04-01
Completion Date
2025-10-31
Last Updated
2025-06-03
Healthy Volunteers
No
Interventions
Final Irrigation with 2.5% Sodium Hypochlorite
After supragingival scaling and removal of caries or defective restorations, the tooth will be isolated and disinfected with 3% H202 and 2.5% NaOCl. Access preparation will be done using a sterile high-speed bur under sterile saline irrigation, followed by re-disinfection. NaOCl will be neutralized with 5% sodium thiosulphate, and sterility will be confirmed via paper point sampling. Only teeth with negative sterility samples will proceed. Sample S1 will be collected after saline irrigation and mild instrumentation with a sterile K-file #15, using an apex locator. Paper points will absorb canal fluid and be frozen in Tris-EDTA buffer at -20°C. Complete chemomechanical preparation will follow, with irrigation after each instrument change. Cervical and mid-thirds will be enlarged with Gates-Glidden burs and the apical third with NiTi RaCe files (40/04). Sample S2 will be taken after preparation. Group A will receive final irrigation with 2.5% NaOCl before collection of sample S3.
Passive Ultrasonic Irrigation (PUI) with Sodium Hypochlorite
Activation of 2.5% sodium hypochlorite solution inside the root canal system using Passive Ultrasonic Irrigation (PUI) after chemomechanical preparation. Group B, sample (S3).
XP-Endo Finisher Activation with Sodium Hypochlorite
Mechanical activation of 2.5% sodium hypochlorite solution using the XP-Endo Finisher instrument following chemomechanical preparation.Group C, sample (S3).
Locations (1)
National and Kapodistrian University of Athens
Athens, Greece