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20 Cards in this Set
- Front
- Back
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Community-based fluoride interventions can be?
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Fluoridation of public water supplies
Salt fluoridation Milk fluoridation |
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Self-applied methods of fluoride delivery can be?
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Fluoride toothpaste
Fluoride rinses Fluoride tablets and drops |
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Give an example of active and passive prevention
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active: tooth paste fluoridation
passive: water fluoridation |
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When should an individual use fluoride rinses?
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if high caries susceptibility is a factor
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In what form is fluoride found in fluoride mouth rinses?
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Sodium Fluoride
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In fluoride rinses, the percentage caries reduction is ____ on free smooth tooth surfaces and ____ on occlusal surfaces.
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larger
less |
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How should the fluoride tablets administered?
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kept in the mouth as long as possible
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What makes fluoride gels and foams attractive?
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Viscosity makes them easy to apply
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Give the reactions of NaF in the mouth and provide the required conditions
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if [F] < 200 ppm:
Hydroxi-apatite + NaF => Fluoro-apatite if [F] > 200 ppm: Hydroxi-apatite + Na+ => CaF CaF => Ca+ + F- Hydroxi-apatite + Ca+ + F- => Fluoro-apatite |
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What is APF? How does it work?
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Acidulated phospho fluoride. Due to low pH, demineralisation occurs but immediate remineralisation happens in the presence of high concentration of fluoride.
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What are the forms of Fluoride?
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NaF
APF MFP Oragnic fluorides |
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What is MFP? How does it work?
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Sodium-mono-fluoro-phosphate
When pH drops, it activates phosphatase enzyme which release F- from MFP molecule. |
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Give an example of organic fluoride and describe its effects
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amine fluoride
more effective than inorganic F. Increased antibaterial action Low surface tension for effective interproximal penetration |
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What are the factors influencing fluoride uptake by enamel?
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Tooth age
Enamel defects Dentine and cementum |
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What are the compositions of the agent?
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Lowered pH (APF) demineralisation
Thickening agent (Hydroxi-ethil cellulose) Gell characteristics Wetting agent: prevents drying up Polishing agent |
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What are the procedure related factors in fluoride application?
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Application technique:
Time of application Continuous fluoride application (zig-zag) |
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What must be done to the teeth before applying F (gel/varnish)?
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Always scale and polish before application
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After each fluoride
treatment a rapid decrease in fluoride takes place with only __% remaining behind in the ename |
20
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what is the pH of APF?
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3
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What are the factors influencing fluoride uptake by enamel? (subheadings)
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Tooth factor
Composition of the agent Procedure related factors |
