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Related Experiment Videos

Translucent fiber post cementation using a light-curing adhesive/composite system: SEM analysis and pull-out test.

Luca Giachetti1, Daniele Scaminaci Russo, Fabio Bertini

  • 1Department of Dentistry, Faculty of Medicine and Surgery, University of Florence, Viale Morgagni 85, Florence 50134, Italy. l.giachetti@odonto.unifi.it <l.giachetti@odonto.unifi.it>

Journal of Dentistry
|October 13, 2004
PubMed
Summary

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This study compared light-curing and dual-cured adhesive systems for translucent fibre post bonding. Both systems showed comparable bond strength, with SEM confirming good adhesion regardless of the curing method used.

Area of Science:

  • Dental Materials Science
  • Adhesive Dentistry
  • Prosthodontics

Background:

  • Fiber posts are widely used in endodontically treated teeth.
  • Effective adhesion of luting agents to dentin and posts is crucial for restoration longevity.
  • Light-curing and dual-cured systems offer different polymerization mechanisms.

Purpose of the Study:

  • To evaluate and compare the performance of light-curing and dual-cured adhesive/luting systems.
  • To assess bond strength and interfacial integrity when used with translucent fiber posts.

Main Methods:

  • Forty root canal treated teeth were divided into two groups (light-cured vs. dual-cured systems).
  • Translucent fiber posts were luted using either Excite+Tetric Flow or All Bond 2+RelyX ARC.

Related Experiment Videos

  • Pull-out tests and Scanning Electron Microscopy (SEM) were performed after storage.

    • Main Results:

    • No statistically significant difference in pull-out bond strength was found between the two groups.
    • SEM observations confirmed good interfacial bonding between dentin and the fiber post for both systems.
    • Dual-cured system: 301.4+/-40.1N; Light-cured system: 275.2+/-58.9N.

    Conclusions:

    • Both light-curing and dual-cured systems provide adequate bond strength and interfacial integrity with translucent fiber posts.
    • Dual curing ensures polymerization in areas light cannot reach, potentially offering superior performance.
    • Incomplete curing in apical regions with the light-cured system might enhance post adaptation and stress distribution.