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Dentistry > Exp Func Ch 59 Sealants > Flashcards

Exp Func Ch 59 Sealants Flashcards

1
Q

Resin material applied to the pits and fissures of teeth

A

Dental sealants

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2
Q

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

A

Polymerization

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3
Q

A technique used to open fissures before sealant is placed

A

Microabrasion

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4
Q

A sealant material that does not contain filler particles

A

Unfilled resin

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5
Q

A salt or ester or acrylic acid

A

Acrylate

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6
Q

Sealant firmly adheres to the tooth surface because of…

A

Sealant retention

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7
Q

Why is clear sealant material less desirable

A

More difficult to evaluate

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8
Q

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

A

No difference

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9
Q

What is the range of shelf life of sealant materials

A

18-36 months

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10
Q

What are sealants and what do they provide

A

“Plastic coverings” provides mechanical barrier against cariogenic bacteria

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11
Q

Caries risk factors

A

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

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12
Q

Do teeth need to be fully erupted before placing sealants

A

No

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13
Q

Can you do sealants if there are caries present interproximally

A

No

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14
Q

What does frank mean

A

Suspicious

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15
Q

What type of sealant material release fluoride and is moisture tolerant

A

Glass ionomer

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16
Q

What are glass ionomer sealants a good choice for

A

Partially erupted, difficult to isolate transitional sealant

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17
Q

What do resin based sealants provide

A

Higher bond strengths and longer retention

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18
Q

Self etch technique

A

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

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19
Q

How to apply L-Pop

A

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

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20
Q

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

A

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

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21
Q

How long do you scrub adhesive onto surface to be sealed

A

15 seconds

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22
Q

How far in advance can the l-pop be activated

A

10 minutes

23
Q

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

A

Within 3 yrs of eruption

24
Q

Sealant material shouldn’t be stored near

A

In proximity to eugenol-containing products

25
Q

Etchant contains what chemical

A

Phosphoric acid

26
Q

Self cured sealants are supplied with two parts…

A

Base and catalyst

27
Q

Why are sealants contraindicated on teeth with proximal decay

A

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

28
Q

What percent of low income children are sealants used

A

30

29
Q

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

A

Proper placement/retention

30
Q

What teeth are candidates for sealants

A

Teeth with deep pits and fissures preferably recently erupted teeth

31
Q

What does carries risk assessment involve

A

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

32
Q

Can you place a sealant over incipient lesions

A

Yes

33
Q

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

A

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

34
Q

What is the difference between filled and unfilled sealants

A

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

35
Q

What technique error most commonly leads to sealant failure

A

Poor isolation

36
Q

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

A

Mylar matrix strips or metal matrix band

37
Q

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

A

Air polish

38
Q

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

A

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

39
Q

What is the benefit of a fluoride releasing sealant

A

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
Q

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

A

6-15 years

41
Q

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

A

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

42
Q

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

A

Reapply etch for five seconds and rinse again

43
Q

How would you describe a pit? A fissure?

A

Pit=deep pocket fissure= groove

44
Q

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

A

80%

45
Q

Most sealant failures occur within the first

A

3 to 6 months

46
Q

What kind of barrier do sealants provide

A

Mechanical barrier against cariogenic bacteria

47
Q

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

A

Illuminate bubbles with explore and used to spread the sealant

48
Q

What happens to the tooth if the sealant is partially lost

A

Microleakage occurs and decay under the sealant

49
Q

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

A

True

50
Q

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

A

You can’t

51
Q

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

A

Glass ionomer

52
Q

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

A

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

53
Q

What kind of damage can a light cure cause

A

Retinal

Dentistry (63 decks)

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