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Periapical Microsurgery: Can Ultrasonic Root-end Preparations Clinically Create or Propagate Dentinal Defects?
1Department of Endodontics, UNC School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Journal of Endodontics
|August 31, 2016
Summary
Ultrasonic root-end preparations are safe for intact roots during periapical microsurgery. However, they can worsen existing dentinal defects, highlighting the need for careful inspection and management.
Area of Science:
- Endodontics
- Microsurgery
Background:
- Clinical evaluation of ultrasonic root-end preparations.
- Focus on dentinal defect creation and propagation.
Purpose of the Study:
- Assess the safety and impact of ultrasonic root-end preparations.
- Investigate the propagation of dentinal defects.
Main Methods:
- Periapical microsurgery on 84 teeth.
- Microscopic inspection for dentinal defects pre- and post-preparation.
- Utilized a 3-grade scale for defect assessment.
Main Results:
- 51 of 81 roots remained intact after preparation.
- 14 partial dentinal defects (54%) propagated into full defects.
- 3 vertical root fractures occurred.
Conclusions:
- Ultrasonic preparations are safe on intact roots.
- Preexisting defects may propagate.
- Light-emitting diodes aid defect detection for better outcomes.
