L4 Flouride

Question 1

Reduction in caries from flouride

Answer 1

50 Percent

Question 2

High levels of flouride during ____ stage and cause pitting and disturbances in form

Answer 2

Secretory stage

Question 3

Chronic moderately high levels during ______ stage can cause chalky whiteness or weakness

Answer 3

Pre-eruptive stage

Question 4

True or False

Most flouride is incorporated into enamel during the pre-eruptive stage

Answer 4

False..Very little..it is only on the surface

Question 5

Enamel composition

Answer 5

Mineral: 87
Water: 11
Organic: 2

Question 6

Post eruptive enamel maturation

Answer 6

Phosphate replaces carbonate
Calcium replaces sodium
Flouride replaces hydroxyl

Question 7

How does acid interact with enamel

Answer 7

H+ combines with PO4-3 and OH- to form HPO4-2 and H2O

Question 8

True or False

Outer enamel is less soluble than interior enamel

Answer 8

True, it has more fluoride

Question 9

Worn areas vs areas with plaque

Answer 9

Worn areas have low F, plaque areas have high F

Question 10

Molecule that forms with high fluoride concentrations

What is a high concentration

Answer 10

Calcium Fluoride

100ppm or more

Question 11

Components of salivary pellicle

Answer 11

Tyrosine rich peptides
Statherin
Proline rich protiens

Question 12

Post eruptive fluoride effect

Answer 12

Brown discoloration due to staining of protein

Question 13

Ideal concentration of flouride

Answer 13

1ppm

Question 14

Mg/kg for high risk fluorosis

Answer 14

.1 mg/kg

Question 15

Greatest risk for fluorosis

Answer 15

Upper centrals during 15-30 months