Exam 3 Flashcards Preview

Dental Hygiene 2 > Exam 3 > Flashcards

Flashcards in Exam 3 Deck (78)
Loading flashcards...
1

Foods and beverages that are commercially processed in optimally fluoridated cities can be distributed and consumed in nonfluoridated communities.

This effect can result in increased fluoride intake by individuals living in nonfluoridated communities providing them some protection against dental caries

Halo/Diffusion effect

2

Provides the most effective method for dental caries prevention and control

Fluoride

3

By way of the circulation to developing teeth

Systemically

4

Directly to the exposed surfaces of erupted teeth

Topically

5

A nutrient taken into the body by way of fluoridated water, dietary supplements, and found in small amounts in foods.

Tea, fish, and brocolli

F12

6

Absorbed by diffusion from the stomach as hydrogen fluoride. Most is absorbed within 60 minutes of ingestion.

F12

7

What percentage of the F12 in the body is located in the mineralized tissues(teeth and bones)?

99%

8

What part of the body is fluoride excreted through?

kidneys

9

The fluoride ion replaces some of the hydroxyl ions of the hydroxyapatite; fluorapatite is the nformed, which is less soluble and more resistant to acid formation.

Also results in the development of shallower occlusal grooves, reducing the risk of pit and fissure caries.

Excessive f12 during enamel formation and tooth development results in dental fluorosis. (The enamel is hypomineralized.)

Pre-Eruptive: Mineralization Stage

10

After mineralization is complete and before eruption, f12 deposition continues in the surface of the enamel.

Children who are exposed to fluoride for the first time within the 2 years prior to eruption have the greatest amount of f12 acquired during this pre-eruptive stage.

Pre-Eruptive: Maturation Stage

11

Hypomineralized (or decalcified) enamel absorbs f12 ingreater quantites than some enamel

Posteruptive

12

Topical fluoride works to:

Inhibit demineralization
Enhance remineralizaton of incipient lesions
Inhibit bacterial activity by inhibiting enolase, an enzyme needed by bacteria to metabolize carbohydrates
Desensitizer
Inhibits erosion

13

Continuous use of fluoridated water from birth can result in..

40-65% fewer carious lesions (40% in the primary teeth)

14

Led to the conclusion that the level of fluoride in the water optimum for dental caries prevention averages 1ppm in moderate climates

Trendley Dean

15

Began his studies to find the cause of "brown stain" which later was called mottled enamel and now is known as dental fluorosis

Fredrick McKay

16

A chemist, pinpointed fluorine as the specific element related to the tooth changes that Dr. McKay had been observing clinically

H.V. Churchill

17

What is the optimal fluoride concentration used for municipal water supplies to prevent dental caries?

0.7-1.2 ppm (parts per million)
For temperature climates, 1ppmThis

18

Absorbs the most fluoride before the other parts of the tooth

Decalcified enamel

19

If a patient has a significant concern, such as pain, this need is addressed prior to intiating dental hygiene treatment

Chief complaint

20

What is fluoride found in?

pesticides

21

Most common for patient on regular hygiene recall intervals

Neutral Sodium Fluoride due to its neutral pH of 7.0

2.0% Sodium Fluoride (NaF) Gel/Foam

22

Recommended for high risk carie
Etches porcelain, composite restorative material, and sealants so it should NOT be used on patients with such restorations.

1.3% Acidulated Phosphate Fluoride (APF) Gel/Foam

23

Has tricalcium phosphate
Great for use in children due to caries inhibiting effect and great diffusibility
Reduces demineralization in white areas around ortho brackets
Application of choice for dentin hypersensitivity!!!!
Cavity liner

5% Neutral Sodium (NaF) Varnish

24

Acute fluoride poisoning is rare
True or False

True

25

Certain lethal dose of of fluoride toxicity

Adult 5-10g of NaF taken at one time
Child 0.5-1.0 g, variable with size and weight

26

What do you do when a patient has ingested too much fluoride?

Induce vomiting (manually or with Ipecac syrup)
Administer fluoride-binding liquid when patient is not vomiting: milk, milk of magnesium, or lime water

27

What are the parts of a dental hygiene care plan?

Periodontal/Gingival Health
-Primary objective is to restore and maintain health of the periodontal tissues
Dental Caries Control
-Includes fluorides, sealants, and dietary control of fermentable carbs
Prevention
-Preventive care starts with the patient's personal daily biofilm control and includes interventions such as: tobacco cessation, risk factor reduction, desensitizing exposed dentin, helping with halitosis, etc.

28

Properties of unwaxed floss

Thinner floss helpful for tight contacts
More likely to fray and shred

Flossing removes biofilm from proximal surfaces

29

Prevents soft tissue trauma due to wax coating
Resists breaking/shredding
Wax gives strength and durability

Waxed Floss

30

Types of interdental brushes

Small insert brushes with reusable handle
Brush with wire handle