Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips

Area of Science:

• Endodontics
• Dental Materials Science
• Surgical Technology

Background:

• Root-end preparation is a critical step in endodontic surgery.
• Ultrasonic tips are commonly used for root-end preparation, but their comparative performance can vary.
• Assessing tip durability and effect on root canal morphology is essential for clinical success.

Purpose of the Study:

• To compare the effectiveness of CVDentus and NSK ultrasonic tips in root-end preparation.
• To evaluate preparation time, root surface microcracking, marginal integrity, and debris presence.
• To assess the morphological changes and wear of the ultrasonic tips post-use.

Main Methods:

• Thirty-two teeth underwent root-end resection and were randomly assigned to CVDentus or NSK tip groups.
• Preparation time was recorded, and photomicrographs assessed microcracking, marginal integrity, and debris.
• Scanning electron microscopy (SEM) analyzed tip morphology before and after use.

Main Results:

• No significant differences were found in microcracking incidence (12.5%), marginal integrity (p=0.102), or preparation time (p=0.780).
• CVDentus tips resulted in significantly less debris compared to NSK tips (p=0.003).
• SEM analysis revealed significant wear and particle loss on NSK tips, while CVDentus tips showed minimal changes.

Conclusions:

• CVDentus ultrasonic tips exhibit superior quality in root-end preparation walls compared to NSK tips.
• Both tip types yield comparable results regarding microcracking, preparation time, and marginal integrity.
• The enhanced durability of CVDentus tips suggests better long-term performance and reduced potential for material shedding.