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Related Experiment Videos

Root-end cavity preparation using the MicroMega Sonic Retro-prep Tip. SEM analysis

A Lloyd1, A Jaunberzins, P M Dummer

  • 1Department of Restorative Dentistry, University of Wales College of Medicine, Cardiff, UK.

International Endodontic Journal
|September 1, 1996
PubMed
Summary

Sonic Retro-prep tips caused significantly more marginal chipping in root-end cavities compared to conventional burs. Perpendicular root-end resections yielded better results than beveled resections in this laboratory study.

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Area of Science:

  • Endodontics
  • Dental Materials Science
  • Surgical Dentistry

Background:

  • Root-end cavity preparation is a critical step in apical surgery.
  • Traditional methods using burs may lead to specific types of damage.
  • Sonic instrumentation offers an alternative but requires comparative analysis.

Purpose of the Study:

  • To compare the quality of root-end cavities prepared by sonic Retro-prep tips versus conventional burs.
  • To evaluate the incidence of marginal chipping and root-face cracks in different preparation techniques.

Main Methods:

  • 80 single-rooted teeth were divided into four groups.
  • Groups involved either sonic Retro-prep tips or burs for cavity preparation.
  • Root-end resection angles (perpendicular vs. beveled) were varied.

Related Experiment Videos

  • Scanning Electron Microscopy (SEM) analyzed cavity margins and root faces.

    • Main Results:

    • Sonic instrumentation resulted in significantly worse marginal chipping (P < 0.001).
    • Perpendicular root-end resections showed significantly better outcomes than beveled resections (P < 0.005).
    • Root-face cracking was minimal and not significantly different between groups.

    Conclusions:

    • Sonic Retro-prep tips may induce more chipping than burs in root-end cavity preparation.
    • Perpendicular root-end resections are preferable to beveled resections for minimizing damage.
    • Further research may explore modifications to sonic tip design or technique.