Advice Flashcards
(162 cards)
when is the main risk period for a child to get dental fluorosis?
between 18 months and 3 years.
what concentration is in the fluoride varnish used in clinic?
??????
How does fluoride prevent dental caries?
- decreases demineralisation of enamel
- increases remineralisation of enamel
- incorporated in developing enamel
- interferes with metabolism of some plaque bacteria.
what is the recommended concentration of fluoride TP for an adult with high caries risk?
200 or 5000ppm Fluoride Toothpaste (need to be given under a px)
How does fluoride decrease demineralisation?
less calcium is lost under acid conditions where fluoride is present.
the demineralised enamel will also take up fluoride.
what does pH have to be blow for enamel to dissolve?
5.5pH
what is needed for enamel to remineralise?
- enamel needs calcium and phosphate.
where can you get calcium and phosphate from?
from saliva, dairy foods and CPP-ACP.
what layer/s of enamel does high concentration of fluoride (e.g. fluoride varnishes) reach?
surface layers in enamel as its over a short period of time.
what layer/s of enamel does lower concentration of fluoride (e.g. water and toothpaste) reach?
surface layer and lesion body as it will be over a long period of time.
how does fluoride interfere with some bacterial metabolism?
fluoride changes the bacterial cell pH to acid conditions. It also interferes with the glycolytic pathway.
what is it called when fluoride is condo-orated in developing enamel?
fluoridated HAP or fluoropataite.
what are some sources of systemic fluorides?
- swallowed TP
- water
- Food (e.g. fish and tea)
- tabletes/ drops.
- milk
- salt.
what is the % of fluoride in daily Mouthwash?
0.05% fluoride
what is the % of fluoride in weekly Mouthwash?
0.2% fluoride
what do you need to consider when prescribing fluoride mouthwash?
- age of patient
- appropriate instructions
- alcohol content.
how often should a professional topical fluoride be applied?
every 3-6 months depending on caries risk.
what dental materials provide amount of fluoride release?
- GIC
- FS
- Compomers
- some resin composites.
when does dental fluorosis occur?
when more than trace amounts of fluoride are ingested during tooth development.
what teeth arte most at risk of dental fluorosis?
permanent anterior theta.
what teeth are most at risk of dental fluorosis?
permanent anterior theta.
when do children learn to spit correctly?
3-4 years old.
enamel with fluoride has a tighter consent of what? and why is this?
protein - because high fluoride prevents the effective removal of the protein matrix during maturation.
is dental fluorosis in teeth hyper or hypo mineralised?
hyper mineralised.