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Related Experiment Videos

Evaluation of a new method for silver point removal.

K Spriggs1, B Gettleman, H H Messer

  • 1Division of Endodontics, University of Minnesota, Minneapolis.

Journal of Endodontics
|July 1, 1990
PubMed
Summary

A novel dental device effectively removes silver points using a trepan bur and adhesive bonding. Its adhesive strength, influenced by fit and overlap, proves adequate for clinical use in endodontic procedures.

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Area of Science:

  • Endodontics
  • Dental Materials Science
  • Biomaterials Engineering

Background:

  • Silver points were historically used as root canal filling materials.
  • Their removal can be challenging, potentially leading to procedural complications.
  • A need exists for effective and minimally invasive removal techniques.

Purpose of the Study:

  • To evaluate the efficacy and adhesive strength of a novel device designed for silver point removal.
  • To determine the influence of key parameters on the device's bonding performance.

Main Methods:

  • A new silver point removal device, incorporating a trepan bur and a cyanoacrylate-bonded hollow tube extractor, was developed.
  • Adhesive strength was quantified using an Instron Universal Testing Machine.
  • Tests assessed the impact of extractor-to-silver point overlap, fit snugness, and adhesive setting time.

Main Results:

  • Achieved adhesive strengths ranged from 2 to 5 kg, deemed clinically adequate.
  • Significant correlations were found between adhesive strength and both overlap (1-3 mm) and snugness of fit.
  • A 5-minute setting time ensured maximum bonding, unless a loose fit was present.

Conclusions:

  • The evaluated device presents an effective clinical method for silver point removal.
  • Optimizing overlap and ensuring a snug fit are crucial for maximizing adhesive strength.
  • The cyanoacrylate-bonded system offers reliable performance under typical endodontic conditions.

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