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Related Experiment Videos

Fluoridated etching on orthodontic bonding

C L Meng1, W N Wang, I S Yeh

  • 1National Defense Medical Center, Taipei, Taiwan, Republic of China.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|September 19, 1997
PubMed
Summary
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Fluoride etching before orthodontic bracket bonding does not affect bond strength. This method may prevent enamel demineralization around brackets, offering a potential clinical application for orthodontists.

Area of Science:

  • Dental Materials Science
  • Orthodontic Adhesion
  • Caries Prevention

Background:

  • Enamel demineralization adjacent to orthodontic attachments is a significant clinical concern.
  • Fluoride treatment integrated into acid etching is a proposed method to mitigate this issue.

Purpose of the Study:

  • To evaluate the impact of fluoridated acid etching on the bond strength of orthodontic brackets.
  • To analyze the debonding interface distribution after bracket removal in teeth treated with and without fluoridated etch.

Main Methods:

  • Enamel etching with 37% phosphoric acid (H3PO4) with or without 1.23% sodium fluoride (NaF) for 15 seconds.
  • Detection of surface fluoride using scanning Auger microprobe/photoelectron spectroscopy.
  • Tensile bond strength testing using an Instron machine and analysis of debonding interfaces via scanning electron microscopy and energy-dispersive X-ray spectroscopy.

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Main Results:

  • Fluoride was detected on the enamel surface following 15-second fluoridated etching.
  • No statistically significant differences were observed in bond strength or debonding interface distribution between the fluoridated and non-fluoridated groups.
  • Enamel detachment was absent in both experimental groups.

Conclusions:

  • Fluoridated etching with 1.23% NaF is a viable technique for orthodontic bracket bonding.
  • This method shows potential for preventing demineralization and caries around orthodontic brackets bonded to enamel.
  • The procedure may offer a valuable clinical application in orthodontic treatment.