Fluoride II Flashcards
2 most common causes of death in acute fl poisoning
cardiac failure
respiratory paralysis
daily use of fl gel in custom trays indicated for
pts w/:
full mouth rehabilitation
undergoing head and neck radiation therapy
acidulated phosphate fl is contraindicated for
porcelain crowns
composite veneers
approved fl compounds found in otc dentifrices include
sodium fluoride
stannous fluoride
sodium monofluorophosphate
arguments against fluoridating public water supplies used by antifluoridationists
fl increases risk of birth defects
fl increases risk of cancer
addition of fl to public drinking water is unconstitutional
side effect of topical application of stannous fl solution
brown staining
gingival reaction
3yo lives in nonfluoridated area has rampant decay. what home-care regimen
fl tablets
fl dentifrice
brush on fl gel
fluorides thought to protect teeth from caries by which mechanism
antibacterial action inhibition of glycolysis reduction of plaque adhesion reduction in enamel solubility enhancement of remineralization
fluoride toxicity manifests in bones as
osteosclerosis
injestion of fluoridated water form birth shown to reduce tooth decay in children by what percentage
60%
fluorosis may result if excessive fl is consumed during which stage of tooth development
calcification
characteristic of fl regime that enhances remineralization
low concentration used daily
at age 11, individual who has lived in nonfluoridated community since birth moves to area w/ water at 10ppm. at 35 he is likely to exhibit
increased fl stored in bones
in communities w/o fluoridated water supply, most cost effective method for delivering systemic fl to 6-12 yo
school water fluoridation
after ingestion of fluorapatite in enamel, this increases resistance of enamel b/c fluorapatite is
a dense molecule resists penetration by acids
amount of untreated dental caries in population at a given time
prevalence
fl toxicity in bones
osteosclerosis
14 yo: what supplement w/ no water fluoridation
1.00 mg
topical fl uptake
fl diffuses into enamel of erupted tooth
CLD of Fl
adult and child
adult 5-10g NaF
child 0.5-1.0g NaF
STD is ____ CLD
1/4
tx of acute fl poisoning
induce vomiting
unless there is some clinical reason for polishing, the pumice prophylaxis may be omitted prior to fl tx b/c
prophylaxis removes the fluoride rich outer layer of enamel
fl thought to protect teeth from caries by which mechanism
antibacterial action inhibition of glycolysis reduction in plaque adhesion reduction in enamel solubility enhancement of remineralization
what reduces root hypersensitivity
topical fl
type and concentration of fl recommended to h&n cancer pt for home care custom tray use
1% neutral sodium fl
symptoms of acute fl toxicity
cramps
vomiting
diarrhea
methods of fl therapy may effect morphology of dentition
water fluoridation
diet supplementation program
(systemic fl)
dosage of a fl tablet supplement should be prescribed to preschooler who consumes optimum fl drinking water
none
when ingested 90-95% absorbed
stomach & small intestine
most inorganic matter of teeth occurs as
hydroxyapatite
most table reaction product of a topical application of fl
fluorapatite
pH range of acidulated fl gels
3.5
symptoms of chronic fl toxicity
dental fluorosis bone fluorosis (form of osteosclerosis)
areas have greatest uptake of topical fl
anterior teeth/areas of demineralization
optimum concentration of fl in drinking water is
warmer: 0.7ppm
cooler: 1.2ppm
how does fl ion affect crystal size solubility of the hydroxyapatite crystal
fl increases size of reminerlized crystals resulting in decreased enamel solubility
enamel crystal size increases; solubility decreases
fluoridation of water supply often accomplished by adding appropriate amounts of what type of fl
sodium silicofluoride
2 main substances removed from enamel in demineralization of enamel are
calcium and phosphorus
fl mouthrinses contraindicated for children under
6yo
8% stannous fl contains
19,360 ppm
mouthrinse programs used daily should use ___ NaF
.05%
7 issues must be considered for professional fluoride therapy
- Fluoride level in the primary water supply
- Overall exposure to fluoride
- Presence of newly erupted teeth or mixed dentition
- Caries assessment
- Client’s ability to tolerate a 4 min topical application
- Age of client (over 6 years)
- Physical or cognitive abilities
What to do in case of Fl toxicity
Lime water or Fl binding liquid like milk
should cases of fl toxicity be documented
yes
1st permanent teeth to erupt
6yr molars
1st sign of toxicity
nausea
cause of 1st sign of fl toxicity
- Fl Rx with HCl acids of stomach
- Creates HFl (hydrogen fluoride)
- Irritates stomach
Shape of smooth surface caries
Pyramidal
Surface is wide
Pointed toward DEJ
3 examples of Fl binding liquid
Lime water
Milk
Antacids containing magnesium hydroxide and aluminum hydroxide
Chemical formula for magnesium hydroxide
Mg(OH)2
What type of effect does Fl have on root caries
topically post eruption effect
home fl therapies incld
custom trays
widely used fl vehicle
toothpaste