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D2 Fall - Operative III > 9/19: Lecture 5 - Sealants > Flashcards

9/19: Lecture 5 - Sealants Flashcards

1
Q

What is the purpose of sealants?

A

To seal the surfaces with dental material to prevent and arrest caries in permanent molars

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1
Q

Where are sealants placed?

A

In anatomical grooves of teeth

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2
Q

When do you place sealants?

A

Soon after eruption

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3
Q

Where do you place sealants?

A

ONLY in pit and fissure areas
ONLY in non-cavitated teeth (sound enamel)

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4
Q

Are sealants temporary or permanent?

A

Temporary

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5
Q

What teeth are PRRs placed in?

A

INITIAL caries (E1 and E2 -> white spot lesions)

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6
Q

Where CANT PRRs extend to?

A

Dentin

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7
Q

Is PRR permanent or temporary?

A

Permanent

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8
Q

What must you do prior to placing PRR?

A

Remove caries

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9
Q

What material is used for PRR?

A

Bonding agent and flowable resin composite

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10
Q

What is a resin-based sealant made of?

A

UDMA or Bis-GMA monomers

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11
Q

How are resin based sealants polymerized?

A

By chemical or light activator

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12
Q

What sealants are most common?

A

Resin based

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13
Q

What are the pros of resin based sealants?

A

good retention, controlled working time, wear-resistant

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14
Q

What are the cons of resin-based sealants?

A

moisture-sensitive, need to clean/etch tooth surface prior

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15
Q

What is glass ionomer made of?

A

cement with acid-base rxn between fluoroaluminosilicate glass powder and polyacrylic acid solution

16
Q

What properties does glass ionomer have?

A

has fluoride releasing-properties

17
Q

What are the pros of glass ionomer?

A

moisture friendly, no need to pretreat teeth (chemical bond), releases fluoride

18
Q

What are the cons of glass ionomer?

A

poor retention, cannot control working time (chemical rxn)

19
Q

What are polyacid-modified resins made of?

A

resin-based material with fluoride release and adhesive property of glass ionomer

20
Q

What are the pros of polyacid-modified resin?

A

release of fluoride and controlled working time

21
Q

What are the cons of polyacid-modified resin?

A

lower amount of fluoride release, lower retention than resin, moisture sensitive, and requires etch prior

22
Q

What is resin-modified glass ionomer made of?

A

glass ionomer sealants with resin component

23
Q

What are the pros of resin modified glass ionomer?

A

similar fluoride release as GI, longer working time, less water sensitive, no etch required

24
Q

What are the cons of resin modified glass ionomer?

A

lower retention than resin, lower wear-resistance than resin

25
Q

How do you place sealants?

A
  1. Dry environment
  2. Clean pits and fissure with pumice and prophy brush (NO prophy paste because interfere with etching process), air abrasion, hydrogen peroxide or enameloplasty
  3. Place acid etch for 15 seconds, rinse, and dry (only for resin-based)
  4. Place material
  5. Light cure (resin-based)
  6. Check occlusion
26
Q

How do you place preventative resin restorations?

A
  1. Remove caries, no numbing necessary because in enamel
  2. Etch for 15-20 seconds, rinse, and dry
  3. Place bond agent, air dry, light cure
  4. Place flowable resin composite
  5. Light cure
  6. Check occlusion
27
Q

What are the 3 caries prevention and risk management strategies?

A
  1. Behavioral modifications
  2. Topical fluoride application
  3. Pit and fissure sealants
28
Q

What are examples of behavioral modifications?

A

food/drink, hygiene habits, chewing gum with xylitol

29
Q

What are examples of topical fluoride applications?

A

fluoride varnish, silver diamine fluoride

30
Q

What are non-surgical caries management examples?

A
  1. Sealants
  2. PRR
31
Q

Who can sealants be placed by?

A

dentist, hygienist, and assistants

32
Q

What do you need to have for sealants?

A

Isolation

33
Q

Who can PRRs be placed by?

A

Only dentist because have to remove caries first

D2 Fall - Operative III (11 decks)

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