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Expanded Functions Dental Assisting (EFDA)- Pennsylvania > **Dental Sealants > Flashcards

**Dental Sealants Flashcards

1
Q

What areas of the teeth are to be sealed with sealants?

A

the pits and fissures or other “cavity-prone” areas

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2
Q

List some tooth surfaces that are considered “cavity-prone” and would be a candidate for sealants?

A

-posterior occlusal surfaces
-buccal pits of mandibular molars
-lingual grooves of maxillary molars and incisors

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3
Q

According to the National Institute of Health (NIH), when is the recommended time for children to have sealant treatment?

A

as soon as the first permanent molars have erupted and the occlusal surface is visible

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4
Q

List some contraindications for sealants.

A

-decay is present
-tooth has an open restoration
-tooth has well-joined pits and fissures
-uncooperative patients

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5
Q

Can a tooth with incipient decay be sealed; and why or why not?

A

yes, if it is small, because any remaining bacteria will no longer cause decay and will not continue to grow because bacteria cannot survive under a properly placed sealant

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6
Q

Can bacteria survive under a properly placed sealant?

A

No

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7
Q

What are the components of most sealant material?

A

a liquid resin monomer and BIS-GMA base

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8
Q

Sealant material is similar to what other restorative material in composition?

A

Composite resin

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9
Q

Are sealants typically “filled” or “unfilled” resins?

A

unfilled

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10
Q

True or False: Sealant material can be ground down mechanically bruxism after the patient has been dismissed.

A

True

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11
Q

What type of polymerization allows for a longer working time for the operator?
-chemical polymerization
-photopolymerization

A

photopolymerization

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12
Q

What is a benefit of a color-changing sealant material?

A

the material can change color during the polymerization process so that the operator can see exactly where the material has been successfully applied

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13
Q

Define: slurry

A

a mixture of pumice and water used to clean the tooth surface prior to sealant placement

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14
Q

How will the tooth appear after successful etching techniques have been performed?

A

dull and chalky white

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15
Q

What is of upmost importance for long-term success rates of sealants?

A

proper isolation

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16
Q

Define: enameloplasty

A

the method of using a fissurotomy bur to open the pits and fissures of tooth structure for better retention of the sealant material

17
Q

When is enameloplasty beneficial?

A

-when a fissure has a narrow slit opening with a large base
-when a fissure has a narrow, short opening with a broad base

18
Q

True or False: Sealants are only beneficial on primary dentition.

A

False

19
Q

What does it mean that a sealant differs from composite resin material because it is unfilled?

A

sealants do not contain the filler particles that composites resin use to enhance the strength of the material

20
Q

What type of sealant material does require occlusal adjustments before dismissal of the patient?

A

filled

21
Q

What is an alternative to resin-based sealant materials?

A

glass ionomer

22
Q

True or False: When using a color-changing sealant material, the change in color confirms a complete polymerization has occurred.

A

False

23
Q

What percentage of phosphoric acid has been shown to provide the best result in enamel conditioning prior to sealant placement?

A

37-50%

24
Q

True or False: Sealant material cannot flow into the enamel pores created by etching if they are filled with water.

A

True

25
Q

True or False: After etching and drying, if the tooth surface becomes wet, the operator can rinse and dry the tooth surface again with water without re-etching in order to clean the area for sealant placement.

A

False

26
Q

True or False: Opaque sealant materials have a shorter polymerization time than other types of sealant materials.

A

False

27
Q

What is the ideal patient position for sealant placement, and why?

A

the patient is in a supine position with the head extended back and the chin up, which improves visibility and saliva pools towards the back of the throat/away from the tooth surface being worked on

28
Q

True or False: Sealant material should not cover the marginal ridges of the tooth being sealed.

A

True

29
Q

What is the typical time frame for a sealant to fail?

A

withing the first 6-12 months of initial placement

30
Q

When possible, why should the dentist delay sealant placement on teeth that have not fully erupted?

A

if the operculum is covering the tooth structure, it can cause the gingival fluid to contaminate the tooth during placement

Expanded Functions Dental Assisting (EFDA)- Pennsylvania (12 decks)

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