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Related Experiment Videos

A method for producing controlled fluoride release from an orthodontic bracket.

Song Li1, Ross S Hobson, Yuxing Bai

  • 1Faculty of Stomatology, Capital University of Medical Sciences, People's Republic of China.

European Journal of Orthodontics
|September 7, 2007
PubMed
Summary
This summary is machine-generated.

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This study developed modified orthodontic brackets that release fluoride. Resin-modified glass ionomer cement showed sustained fluoride release, potentially preventing white spot lesions during orthodontic treatment.

Area of Science:

  • Biomaterials Science
  • Dental Materials
  • Orthodontics

Background:

  • Orthodontic treatment can increase the risk of demineralization, leading to white spot lesions.
  • Fluoride release from orthodontic appliances is a potential strategy to mitigate this risk.

Purpose of the Study:

  • To manufacture and evaluate novel fluoride-releasing orthodontic brackets.
  • To assess the in vitro fluoride release from modified brackets filled with different materials.

Main Methods:

  • Thirty-two orthodontic brackets were modified with a central recess.
  • The recess was filled with four materials: glass ionomer cement, resin-modified glass ionomer cement (RMGIC), zinc phosphate, and resin, with and without sodium fluoride.
  • Fluoride release was measured over 10 weeks using ion chromatography.

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Main Results:

  • The resin group with 38% sodium fluoride showed high initial fluoride release.
  • The RMGIC group with 15% sodium fluoride demonstrated significantly higher sustained fluoride release after 5 weeks.
  • Statistical analysis confirmed significant differences in fluoride release between groups.

Conclusions:

  • Modified orthodontic brackets can serve as effective fluoride-releasing reservoirs.
  • RMGIC is a promising material for sustained fluoride release in orthodontic brackets.
  • This innovation may help prevent demineralization during fixed appliance therapy.