Breaking the fluoride diffusion barrier with combined dielectrophoresis and AC electroosmosis

Research output: Contribution to journalArticle

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Abstract

Purpose: To compare the deposition of fluoride particles into bovine enamel by diffusion (n= 20); dielectrophoresis (DEP) at 10 Hz and 5000 Hz (n= 10); and DEP (10 Hz and 5000 Hz) combined with AC electroosmosis (ACEO) at 400 Hz (DEP/ACE) (n= 10). Methods: Fluoride particle movements induced at 10, 400, and 5000 Hz frequencies, were analyzed with light microscopy and stack imaging in real time. Fluoride concentrations were measured at various enamel depths using wavelength dispersive spectrometry. Results were analyzed by ANOVA/Student-Newman-Keuls post hoc (P= 0.05). Results: Fluoride levels in teeth treated with DEP were significantly higher than diffusion at depths 10 and 20 urn. DEP and diffusion were relatively ineffective at greater depths. The highest fluoride concentrations at 10, 20, and 50 um depths were found in the DEP/ACE group. After 20 minutes, DEP/ACE increased fluoride uptake by 600% at 50 um and 400% at 100 μm compared to baseline levels (P<0.05). Fluoride particle movement was induced by negative DEP at 10 Hz; positive DEP at 5000 Hz; and ACEO at 400 Hz frequency.

Original languageEnglish (US)
Pages (from-to)228-236
Number of pages9
JournalAmerican journal of dentistry
Volume26
Issue number4
StatePublished - Aug 1 2013

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Electroosmosis
Fluorides
Dental Enamel
Microscopy
Spectrum Analysis
Analysis of Variance
Tooth
Students
Light

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Breaking the fluoride diffusion barrier with combined dielectrophoresis and AC electroosmosis. / Ivanoff, Chris; Hottel, Timothy; Garcia-Godoy, Franklin; Shah, Pratikkumar.

In: American journal of dentistry, Vol. 26, No. 4, 01.08.2013, p. 228-236.

Research output: Contribution to journalArticle

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abstract = "Purpose: To compare the deposition of fluoride particles into bovine enamel by diffusion (n= 20); dielectrophoresis (DEP) at 10 Hz and 5000 Hz (n= 10); and DEP (10 Hz and 5000 Hz) combined with AC electroosmosis (ACEO) at 400 Hz (DEP/ACE) (n= 10). Methods: Fluoride particle movements induced at 10, 400, and 5000 Hz frequencies, were analyzed with light microscopy and stack imaging in real time. Fluoride concentrations were measured at various enamel depths using wavelength dispersive spectrometry. Results were analyzed by ANOVA/Student-Newman-Keuls post hoc (P= 0.05). Results: Fluoride levels in teeth treated with DEP were significantly higher than diffusion at depths 10 and 20 urn. DEP and diffusion were relatively ineffective at greater depths. The highest fluoride concentrations at 10, 20, and 50 um depths were found in the DEP/ACE group. After 20 minutes, DEP/ACE increased fluoride uptake by 600{\%} at 50 um and 400{\%} at 100 μm compared to baseline levels (P<0.05). Fluoride particle movement was induced by negative DEP at 10 Hz; positive DEP at 5000 Hz; and ACEO at 400 Hz frequency.",
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AU - Hottel, Timothy

AU - Garcia-Godoy, Franklin

AU - Shah, Pratikkumar

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N2 - Purpose: To compare the deposition of fluoride particles into bovine enamel by diffusion (n= 20); dielectrophoresis (DEP) at 10 Hz and 5000 Hz (n= 10); and DEP (10 Hz and 5000 Hz) combined with AC electroosmosis (ACEO) at 400 Hz (DEP/ACE) (n= 10). Methods: Fluoride particle movements induced at 10, 400, and 5000 Hz frequencies, were analyzed with light microscopy and stack imaging in real time. Fluoride concentrations were measured at various enamel depths using wavelength dispersive spectrometry. Results were analyzed by ANOVA/Student-Newman-Keuls post hoc (P= 0.05). Results: Fluoride levels in teeth treated with DEP were significantly higher than diffusion at depths 10 and 20 urn. DEP and diffusion were relatively ineffective at greater depths. The highest fluoride concentrations at 10, 20, and 50 um depths were found in the DEP/ACE group. After 20 minutes, DEP/ACE increased fluoride uptake by 600% at 50 um and 400% at 100 μm compared to baseline levels (P<0.05). Fluoride particle movement was induced by negative DEP at 10 Hz; positive DEP at 5000 Hz; and ACEO at 400 Hz frequency.

AB - Purpose: To compare the deposition of fluoride particles into bovine enamel by diffusion (n= 20); dielectrophoresis (DEP) at 10 Hz and 5000 Hz (n= 10); and DEP (10 Hz and 5000 Hz) combined with AC electroosmosis (ACEO) at 400 Hz (DEP/ACE) (n= 10). Methods: Fluoride particle movements induced at 10, 400, and 5000 Hz frequencies, were analyzed with light microscopy and stack imaging in real time. Fluoride concentrations were measured at various enamel depths using wavelength dispersive spectrometry. Results were analyzed by ANOVA/Student-Newman-Keuls post hoc (P= 0.05). Results: Fluoride levels in teeth treated with DEP were significantly higher than diffusion at depths 10 and 20 urn. DEP and diffusion were relatively ineffective at greater depths. The highest fluoride concentrations at 10, 20, and 50 um depths were found in the DEP/ACE group. After 20 minutes, DEP/ACE increased fluoride uptake by 600% at 50 um and 400% at 100 μm compared to baseline levels (P<0.05). Fluoride particle movement was induced by negative DEP at 10 Hz; positive DEP at 5000 Hz; and ACEO at 400 Hz frequency.

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