Abstract
The aim of this study was to examine the effect of fluoride ion concentration on the morphology of calcium phosphate crystals grown on acid-etched enamel as a model for tooth enamel erosion. Samples were immersed in calcification solution for 16 h and changes in crystal morphology were monitored by field emission scanning electron microscopy. Without fluoride, plate-like octacalcium phosphate crystals (20 nm thick, 2-10 microm wide) were formed. With 1-10 mg/l fluoride, arrays of denser needle-like nanocrystals (20-30 nm wide, >500 nm in length) were formed. We conclude that there is a minimal fluoride concentration (1 mg/l) that dramatically affects the morphology of calcium phosphate crystals grown on etched enamel in vitro.
2009 S. Karger AG, Basel.
Publication types
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Research Support, N.I.H., Extramural
MeSH terms
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Acid Etching, Dental*
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Biomimetic Materials / chemistry
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Calcium Chloride / chemistry
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Calcium Phosphates / chemistry*
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Cariostatic Agents / chemistry
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Cariostatic Agents / pharmacology*
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Crystallography
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Dental Enamel / chemistry
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Dental Enamel / drug effects*
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Durapatite / chemistry
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Electron Probe Microanalysis
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Fluorides / chemistry
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Fluorides / pharmacology*
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Humans
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Hydrogen-Ion Concentration
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Microscopy, Electron, Scanning
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Nanoparticles / chemistry
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Phosphates / chemistry
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Potassium Compounds / chemistry
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Sodium Chloride / chemistry
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Sodium Fluoride / chemistry
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Sodium Fluoride / pharmacology
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Spectroscopy, Fourier Transform Infrared
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Time Factors
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Tooth Erosion / etiology
Substances
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Calcium Phosphates
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Cariostatic Agents
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Phosphates
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Potassium Compounds
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octacalcium phosphate
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Sodium Chloride
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Sodium Fluoride
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Durapatite
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calcium phosphate
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potassium phosphate
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Calcium Chloride
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Fluorides