The effect of fluoride on dental alloys in different concentrations of fluoride artificial saliva / 华西口腔医学杂志
West China Journal of Stomatology
; (6): 18-21, 2012.
Article
in Zh
| WPRIM
| ID: wpr-241872
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To study the changes in surface morphology of cobalt-chromium alloy, pure titanium and high-cobalt chromium molybdenum alloy immersed in artificial saliva with different concentrations of fluoride, and to analyze the corrosion resistance of these metals.</p><p><b>METHODS</b>The three kinds of metal were polished and then were immersed in artificial saliva with different concentrations of fluoride (0%, 0.05%, 0.2%). All specimens were immersed for 3 weeks at (37.0 +/- 1.0) degrees C. Metal surface roughness before and after immersion were measured and analyzed by scanning electron microscope (SEM).</p><p><b>RESULTS</b>Metal surface roughness was increased with the concentration of fluoride. The surface roughness of the Co-Cr group and Ti group had a statistically significant difference between before and after immersion at the fluoride concentration of 0.05% (P<0.01), and the difference between Co-Cr group and vitallium2000 group, Ti group and vitallium2000 group were statistically significant difference (P<0.01). The differences of three groups before and after immersion were statistically significant at the fluoride concentration of 0.2% (P<0.01), and the difference among three groups was statistically significant (P<0.01).</p><p><b>CONCLUSION</b>Patients who frequently use fluoride products should not use pure titanium or cobalt-chromium alloy prosthesis. Patients with these three metal prostheses are not advised to use high concentration fluoride products.</p>
Full text:
1
Database:
WPRIM
Main subject:
Phosphates
/
Saliva, Artificial
/
Surface Properties
/
Titanium
/
Materials Testing
/
Chromium Alloys
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Corrosion
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Dental Alloys
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Fluorides
Limits:
Humans
Language:
Zh
Journal:
West China Journal of Stomatology
Year:
2012
Document type:
Article