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[Cementing brackets with glass ionomer cements].

S Schanbel1, B Kocjancic

  • 1Zentrums für ZMK (Carolinum) der J.W. Goethe-Universität Frankfurt/M.

Praktische Kieferorthopadie
|May 1, 1991
PubMed
Summary

Fuji I cement shows potential for bonding metal brackets to enamel in vitro. Other glass ionomer cements lack sufficient bond strength after temperature changes, requiring further in vivo research for confirmation.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering

Background:

  • Glass ionomer cements are utilized for bracket bonding in orthodontics.
  • Assessing the stability of these cements under varying conditions is crucial for clinical efficacy.

Purpose of the Study:

  • To evaluate the in vitro shear bond strength of different glass ionomer cements used for orthodontic bracket bonding.
  • To determine the impact of temperature fluctuations on the bond strength of these materials.

Main Methods:

  • In vitro testing of bracket shear bond strength using various glass ionomer cements.
  • Exposure of cemented brackets to different temperature changes to simulate intraoral conditions.

Main Results:

  • Fuji I demonstrated acceptable shear bond strength for bonding metal brackets to enamel.
  • All other tested glass ionomer cements exhibited significant bond strength reduction after temperature variations.
  • The stability of glass ionomer cements is highly dependent on the specific brand and composition.

Conclusions:

  • Fuji I may serve as a viable alternative for in vitro metal bracket bonding to enamel.
  • Further in vivo studies are essential to validate these in vitro findings.
  • Most investigated glass ionomer cements are not recommended for clinical bracket bonding due to temperature-induced bond degradation.

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