Ultrasound effects after post space preparation: An SEM study.

Area of Science:

• Endodontics
• Dental Materials Science
• Scanning Electron Microscopy

Background:

• Post space preparation in endodontically treated teeth can leave debris and open dentine tubules.
• Effective cleaning is crucial for successful postendodontic restorations.
• Current cleaning protocols may not fully remove all debris.

Purpose of the Study:

• To evaluate the efficacy of ultrasonic activation with EDTA irrigation in occluding dentine tubules.
• To compare ultrasonic treatment with conventional etching for root canal cleaning after post space preparation.
• To assess debris and open tubule marks at different root levels.

Main Methods:

• Twenty-four endodontically treated premolars were prepared for post space.
• Samples were divided into a control group (etching) and an experimental group (EDTA irrigation with 30s ultrasound activation before etching).
• Root canal walls were examined using Scanning Electron Microscopy (SEM) at 1000x magnification.

Main Results:

• Ultrasonic treatment significantly decreased debris and open dentine tubule marks compared to the control group (p < 0.05).
• No significant differences in debris or tubule occlusion were found at different root levels in the ultrasonic group.
• The control group showed significant differences in debris and tubule marks between apical and coronal levels.

Conclusions:

• Ultrasonic activation combined with EDTA irrigation is an effective method for cleaning root canal walls after post space preparation.
• This technique enhances dentine tubule occlusion and reduces debris.
• The findings suggest improved outcomes for postendodontic restorations using this ultrasonic approach.