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PEDO Midterm (Fall) > 4. Restorative Dentistry II > Flashcards

4. Restorative Dentistry II Flashcards

1
Q

What are the indications for composite restorations

A
  • Class I caries
  • Small Class II caries
  • Anterior decay (strip crown)
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2
Q

Is GI a good restorative material in the posterior primary teeth

A

yes

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3
Q

What are the contraindications of composite

A

Large decay

  • Class II decay (extends beyond the line angles)
  • Any pulp exposure in the posterior

Must be able to isolate

Multisurface decay
->2+ surfaces

High Risk Patient

  • Any posterior tooth that needs restoring in the OR gets a SSC
  • Young patient with lots of decay
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4
Q

The ideal class II size for a composite restoration is when the decay extends where

A

touching the DEJ or just into dentin (once you see clinically it is too large for composite

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5
Q

Do we do slot preps on primary teeth

A

no- should extend a dovetail on the occlusal (primary teeth are too short)

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6
Q

After a Class II restoration what should you do to prevent future decay of the tooth

A

Seal the remoaining pits and fissures

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7
Q

What are the two types of matrix bands you can use to restore a class II resin

A
  • Performed/sized

- T band

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8
Q

What are the metals that make up a SSC ranged in order from greatest to least % composition

A
  • Iron (65-73%)
  • Chromium (17-20%)
  • Nickel (8-13%)
  • Manganese, silicone, carbon (<2%)
  • *No Hg
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9
Q

What does the crown flex over that gives it its retention

A

cervical buldge

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10
Q

(T/F) SSC can be used on permanent teeth

A

t

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11
Q

what are the three types of SSCs

A
  • Pre-contoured
  • Pre-trimmed
  • Esthetic
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12
Q

Describe pre-contoured SSCs

A
  • Festooned and contoured

- Usually don’t require trimming

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13
Q

Describe pre-trimmed SSCs

A
  • straight non-contoured sides
  • Trimmed to follow the gingival crest
  • Need to cut and crimp
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14
Q

Describe esthetic SSCs

A
  • Expensive

- Loose ability to cut/crimp

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15
Q

Indications for SSC

A
  • Large caries
  • Multisurface decay
  • After pulp tx
  • Cervical decay
  • Developmental defects (hypoplasia, amelogenesis imperfecta, dentinogenesis imperfecta)
  • High risk Patient
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16
Q

Steps for SSC

A
  • Evaluate pre-op occlusion
  • LA
  • Isolation
  • Occlusal reduction
  • Interproximal reduction
  • Smooth line angles
  • Caries removal
  • Select crown
  • Trim and crimp
  • Final try on
  • Cement
17
Q

What core build up material is used for SCC

A

NO CORE MATERIAL- cement fills in the spaces

18
Q

Which is done first- the SSC prep or the caries removal

A

SSC prep

19
Q

What is the occlusal reduction for SSC

A

1-1.5 mm

20
Q

What burs can be used for SSC occlusal reduction

A
  • 556
  • Football diamond
  • Diamond wheel
21
Q

Interproximal margin for SSC should be

A
  • Subgingival

- Feather edge

22
Q

Why is forming a ledge bad from a SSC prep

A

will prevent full seating of SSC

23
Q

What burs are used for interproximal reduction

A
  • 169

- Diamond flame

24
Q

Why is the distal of the primary 2nd molar often underprepped? What are the consequences?

A

No adjacent tooth

-Consequence= can cause ectopic eruption of the 1st permanent molar

25
Q

BL reduction for a SSC

A

Very limited- just round the line angles

  • Keep the reduction on the occlusal 1/3rd of the tooth
  • Bevel the buccal/ occlusal lingual walls
  • Don’t want to remove the buldge (routinely)
26
Q

When might you want to reduce the buldge

A

when the MB or cervical buldge is too large

27
Q

When trying in a crown you want to select the (smallest/largest) crown that fits

A

smallest

28
Q

What are the different SSC sizes? Smallest? Largest? Most common size?

A

1-7

  • 1= smallest
  • 7= largest
  • 4= most common
29
Q

The crown should be seated on the tooth from the _ to the _

A

lingual to buccal

30
Q

SSC should extend _ mm subgingivally

A

1 mm

31
Q

what should you look for when trying in a SSC

A
  • Aligned marginal ridges
  • Good marginal adaptation
  • Cut and crimp as needed (excessive blanching means the crown is too long)
  • Check occlusion
32
Q

(T/F) Slight blanching when trying in the SSC is ok

A

t

33
Q

(T/F) Unitek crowns don’t often require cutting and crimping

A

f

34
Q

Why do you crimp

A
  • because after cutting the circumference becomes wider

- Can crimp BL if you feel and open margin

35
Q

How much cement should be placed in the SSC

A

2/3 full

36
Q

what are the post-op instructions after a SSC

A

-Avoid sticky foods- there is an adjuctment period to get used to the crown

PEDO Midterm (Fall) (8 decks)

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