Exp Func Ch 59 Sealants Flashcards Preview

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Flashcards in Exp Func Ch 59 Sealants Deck (53):
1

Resin material applied to the pits and fissures of teeth

Dental sealants

2

The process of changing a simple chemical into another substance that contains the same elements

Polymerization

3

A technique used to open fissures before sealant is placed

Microabrasion

4

A sealant material that does not contain filler particles

Unfilled resin

5

A salt or ester or acrylic acid

Acrylate

6

Sealant firmly adheres to the tooth surface because of...

Sealant retention

7

Why is clear sealant material less desirable

More difficult to evaluate

8

What is the difference between filled and unfilled sealants with regard to retention rates

No difference

9

What is the range of shelf life of sealant materials

18-36 months

10

What are sealants and what do they provide

"Plastic coverings" provides mechanical barrier against cariogenic bacteria

11

Caries risk factors

Accumulation of plaque, cariogenic diet, history of caries, low fluoride intake, pit and fissure anatomy

12

Do teeth need to be fully erupted before placing sealants

No

13

Can you do sealants if there are caries present interproximally

No

14

What does frank mean

Suspicious

15

What type of sealant material release fluoride and is moisture tolerant

Glass ionomer

16

What are glass ionomer sealants a good choice for

Partially erupted, difficult to isolate transitional sealant

17

What do resin based sealants provide

Higher bond strengths and longer retention

18

Self etch technique

Clean teeth, no cleaning medium containing fluoride or oils (affects adhesion), rinse, isolate, dry, activate L-pop

19

How to apply L-Pop

Churning or spinning motion to applicator for 5 seconds to mix adhesive

20

What color should the applicator on the L-Pop be when properly activated

Light yellow tint. If not unfold and reactivate. Clear indicates improper activation

21

How long do you scrub adhesive onto surface to be sealed

15 seconds

22

How far in advance can the l-pop be activated

10 minutes

23

What is the highest risk period for decay after a tooth erupts

Within 3 yrs of eruption

24

Sealant material shouldn't be stored near

In proximity to eugenol-containing products

25

Etchant contains what chemical

Phosphoric acid

26

Self cured sealants are supplied with two parts...

Base and catalyst

27

Why are sealants contraindicated on teeth with proximal decay

Sealant would break off because if filling placed to restore after sealant placed

28

What percent of low income children are sealants used

30

29

What is the most important factor in the success of a sealant

Proper placement/retention

30

What teeth are candidates for sealants

Teeth with deep pits and fissures preferably recently erupted teeth

31

What does carries risk assessment involve

Premolars/molar deep grooves of some others permanent, primary molars

32

Can you place a sealant over incipient lesions

Yes

33

What is the advantage of a tinted sealant over clear/colorless sealant

Easier to diagnose, easy to see during application and checking for retention

34

What is the difference between filled and unfilled sealants

Filler more wear resistant, unfilled, unfilled does not require occlusal adjustment because natural wear is sufficient filled does with possible adjustment

35

What technique error most commonly leads to sealant failure

Poor isolation

36

What item could be used in interproximal spaces to prevent the etchant from contacting adjacent teeth during the etchant procedure

Mylar matrix strips or metal matrix band

37

What technique can be used to clean the teeth other than using prophy paste

Air polish

38

What situations indicate the sealant may need to be replaced or adjusted

Too high, sealant comes off when retention checked, blocks contact area, holes

39

What is the benefit of a fluoride releasing sealant

Makes pit or fissure more resistant to decay if sealant lost, fluoride released from sealant creates layer at base of sealed groove to re-mineralize incipient

40

Pit and fissure sealants are especially useful through the carries active period Which is

6-15 years

41

What happens to the enamel if it is etched but not sealed

Will re-mineralize after 24 hour exposure to calcium phosphate salts in saliva

42

If the tooth becomes contaminated with moisture, after it is etched, what should you do

Reapply etch for five seconds and rinse again

43

How would you describe a pit? A fissure?

Pit=deep pocket fissure= groove

44

According to studies, with proper maintenance and recall appointment, what is the success rate of sealants after a decade or more

80%

45

Most sealant failures occur within the first

3 to 6 months

46

What kind of barrier do sealants provide

Mechanical barrier against cariogenic bacteria

47

After a sealant has been placed and before it is cured, what should you do

Illuminate bubbles with explore and used to spread the sealant

48

What happens to the tooth if the sealant is partially lost

Microleakage occurs and decay under the sealant

49

Unfilled sealants that are high after they are cured, will wear down and do not need to be adjusted

True

50

If a child has a tooth that hasn't erupted yet what material would be used to place a sealant

You can't

51

What kind of sealant material would be used for a transitional sealant

Glass ionomer

52

Is there a difference between resin base sealants and glass ionomer sealants

Resin base provides hire bond strength and longer retention, glass ionomer moisture tolerant releases fluoride

53

What kind of damage can a light cure cause

Retinal