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Force to Debond Brackets from High-fusing and Low-fusing Porcelain Systems
The Angle Orthodontist
  • Nicholas P. Ferri, Marquette University
  • Theodore Eliades, Aristotle University of Thessaloniki
  • Spiros Zinelis, University of Athens
  • T. Gerard Bradley, Marquette University
Document Type
Format of Original
4 p.
Publication Date
The E. H. Angle Education and Research Foundation Inc.

The purpose of this study was to test the hypothesis that porcelain surface finishing, ie, low- and high-fusing porcelain, has an effect on the amount of force required to debond orthodontic brackets. A total of 20 high-fusing and 20 low-fusing porcelain specimens were prepared, polished, and bonded with standard edgewise brackets using a suggested porcelain bonding protocol. The brackets were debonded with a universal testing machine at shear mode. Resin removal was performed using two methods: a multifluted carbide bur with and without the use of Sof-Lex polishing discs. Representative specimens were studied under a scanning electron microscope before and after debonding to assess the surface morphology and potential surface damage. Statistical analysis with a t-test revealed that there was no difference between the two porcelain treatments on the force to debond values and no qualitative differences were observed on the porcelain surface between the two resin clean-up methods. From a clinical perspective, the practitioner can bond ceramic restorations without previous knowledge of the porcelain type used.


Published version. The Angle Orthodontist, Vol. 76, No. 2 (March 2006): 278-281. Permalink. © 2006 The EH Angle Education and Research Foundation Inc. Used with permission.

Citation Information
Nicholas P. Ferri, Theodore Eliades, Spiros Zinelis and T. Gerard Bradley. "Force to Debond Brackets from High-fusing and Low-fusing Porcelain Systems" The Angle Orthodontist (2006) ISSN: 0003-3219
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