Comparison of Sealer Penetration by Using Different Irrigation Techniques - An In-vitro Study

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Root canal treatment aims to eliminate microorganisms, especially in the apical third, to prevent reinfection.
• Effective instrumentation combined with adequate irrigation is essential for successful root canal therapy.

Purpose of the Study:

• To compare the sealer penetration efficacy of three irrigation techniques: apical negative pressure irrigation (Endovac), Passive Ultrasonic Irrigation (PUI), and a combination of both.

Main Methods:

• 48 single-rooted maxillary central incisors underwent biomechanical preparation.
• Samples were divided into three groups: Endovac, PUI, and combined irrigation.
• Sealer penetration was evaluated using confocal laser scanning microscopy at 1mm, 3mm, and 5mm levels after obturation with AH Plus sealer.

Main Results:

• The combination group demonstrated superior sealer penetration at 1mm and 3mm compared to Endovac and PUI groups.
• Endovac showed significantly better penetration at 1mm than PUI.
• No significant difference in sealer penetration was observed at 5mm between PUI and the combination group.

Conclusions:

• The combined apical negative pressure irrigation and PUI technique achieved superior sealer penetration at 1mm and 3mm from the working length.
• This combination technique holds promise for enhancing the effectiveness of root canal disinfection.