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Operative Dentistry > Exam2: PRR > Flashcards

Exam2: PRR Flashcards

1
Q

When determining whether to do a sealant or a composite…A composite requires the presence of _____ or significantly affected _____.

A

DECAY….dentin

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2
Q

In a radiograph for detection of fissure caries: they will not show up until they are _______.

A

advanced

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3
Q

Searching for Caries: ______ opaque coloration…______ discoloration in fissure…Discoloration under _______
adjacent to fissure….._______ (hole)

A

white…dark…enamel…cavitation

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4
Q

Using an explorer detected fissure caries only ____% of the time!!

A

24%!

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5
Q

What is a useful method for detection of proximal caries, detection of cracks, but has limited use for fissure caries?

A

Transillumination! (you can use your hand piece light!)

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6
Q

In transillumination detection, the caries will show as a _______.

A

shadow

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7
Q

How far does a florescent caries detector look into enamel? What is it making fluoresce?

A

2mm…bacterial metabolites

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8
Q

A diagoDent florescent reading of more then ____ indicates that an invasive prep should be done.

A

30

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9
Q

We are going to apply anesthetic if the decay has gotten to the ______.

A

dentin

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10
Q

Do you select the shade of composite before or during the rubber dam?

A

BEFORE!

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11
Q

PRR Prep guidelines: Sometimes the prep only needs to involve the ___ & ______ pattern where the caries or affected dentin is involved. HOWEVER, deeply fissured grooves may be ______ to allow flowable composite or sealant to fill in.

A

pit & groove….opened

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12
Q

PRR Prep guidelines: Small stained ______ without _____ may remain unaltered.

A

grooves….debris

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13
Q

PRR Prep guidelines: the ______ may be uneven and in either enamel or dentin because we are removing ONLY the infected tooth structure.

A

pulpal floor

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14
Q

What are the two burs we use for a Fissurotomy?

A

132F Diamond & 1/4 round carbide bur

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15
Q

Generally a ______ bur may be used to access DEEPER areas.

A

132F diamond

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16
Q

What 2 burs do we use for a LARGER preparation then our fissurotomy?

A

245-pear shaped carbide and #330D-pear shaped diamond

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17
Q

For removal of soft caries we can use small ______ for areas of limited access. On the other hand, larger ______ can be used for gross caries.

A

spoons..spoons

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18
Q

Not all stained dentin needs to be removed if it is _____.

A

hard

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19
Q

PRR Final Design Criteria: Limit size to _____ removal and access to place restorative material.

A

decay

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20
Q

PRR Final Design Criteria: No “_______ for prevention”

A

extension

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21
Q

PRR Final Design Criteria: ______ Internal form

A

rounded

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22
Q

PRR Final Design Criteria: ________ margins are sharp and well defined

A

cavo-surface

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23
Q

PRR Final Design Criteria: Cavity walls need to be _____

A

clean

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24
Q

PRR Final Design Criteria: _______ enamel is OK

A

Undermined

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25
Q

PRR Final Design Criteria: No ______ enamel rods

A

loose…wtf does this mean??

26
Q

PRR Final Design Criteria: Leave affected ______.

A

dentin

27
Q

PRR: Preparing tooth for resin bonding: We are bonding to _____ and _____.

A

enamel and dentin

28
Q

PRR: Preparing tooth for resin bonding: _____ is higher mineral while _____ is more organic.

A

enamel…dentin

29
Q

PRR: Preparing tooth for resin bonding: Are we really bonding? its actually _______ retention.

A

micro-mechanical

30
Q

Etching the enamel removes the ____ layer.

A

smear

31
Q

Bonding: When tooth is ____!!! the hydrophobic bonding resin gets drawn into the tubules via _______ action.

A

DRY!!!….capillary

32
Q

The deeper the resin ____ the more the bond strength.

A

tags

33
Q

Speaking of deeper resin tags for better bonding strength, which are going to have deeper tags: rods etched END-ON or rods etched on SIDE WALLS???

A

END-ON is going to give much deeper resin tags

34
Q

When etching to DENTIN, we are removing the _____ layer and we are removing the ________ form the surface. We are also exposing the ______ fibrils.

A

smear layer…hydroxyapatite..collagen

35
Q

When etching dentin, it can _____ orifices to dentinal tubules or ______ collagen IF LEFT TOO LONG!

A

widen…denature

36
Q

Why do we scrub dentin with etch? What is the analogy?

A

because its like SHAG CARPET! and we want to stand up the carpet

37
Q

Do we dry dentin completely after etching?

A

NO! it BLOCKS the tubules!!

38
Q

When applying the bond after etch/rinse you apply it for ____ seconds while _____ the dentin. Then cure for ____ seconds. MAKE SURE YOU ______ the bottle when done, its very ______!

A

12 seconds…scrubbing…20 seconds..RECAP…volatile!

39
Q

What is the name for the interface of bonding resin & demineralized dentin?

A

the HYBRID layer

40
Q

What is the organic polymer matrix in the composite resin? What % is our packable composite is FILLER? What is the filler generally made of?

A

Bis-GMA!…75-85% filler!…quartz or sillica

41
Q

The _____ filler & the less resin means LESS polymerization shrinkage!!

A

MORE

42
Q

Drawbacks of flowable: high polymerization _______, and poor _____ resistance.

A

shirnkage….wear

43
Q

Improvements to flowable via microhybrid: lower polymerization _______, better ______ resistance.

A

shinkage….wear

44
Q

What is the thin, unset layer of resin on the SURFACE after polymerization?

A

Air-Inhibited Layer

45
Q

Do we want the air inhibited layer if we are going to stack more composite on it?

A

YES! it aids in bonding the next layer!

46
Q

In polymerization shrinkage, composite resin shrinks __-__%, which can cause leakage at _______, and it can also cause stress ______ of the enamel.

A

1-3%…margins…cracking

47
Q

Which tooth surface typically experiences more margin shrinkage: dentin or enamel?

A

dentin is more common for shrinkage

48
Q

What technique helps to reduce the effects of shrinkage?

A

Placing the composite in small increments!

49
Q

DO NOT BUILD more then ___mm of packable composite! ALSO, _____ shades of composite require longer curing times!

A

2mm….darker

50
Q

Does a moderate preparation involve dentin? Would you use packable composite here?

A

yes..yes

51
Q

In a LARGE preparation, _______ are involved significantly. Do we use flowable? Packable?

A

grooves…NO flowable, JUST packable

52
Q

What instrument do I use to work with the recently placed composite?

A

XTS Mini #1

53
Q

Trim the excess composite with a _____ bur.

A

379F and EF football diamond bur

54
Q

Re-establish the normal anatomy with the ______ bur.

A

247EF diamond bur (pencil shape)

55
Q

Check occlusion ______ the final polish. ONLY remove heavy contacts on the _______!

A

BEFORE…restoration

56
Q

When polishing the PRR- You must go sequentially from ______ to _____ finishing and polishing instruments.

A

coarser to finer

57
Q

When polishing the PRR- remove deeper _______ before trying to go on to a finer polisher

A

scratches

58
Q

When polishing the PRR- Try to achieve a smooth transition from tooth to composite and then from composite to tooth – no ______ with the explorer

A

click…the DREADFUL click :)

59
Q

When polishing- 1st use use the _____ point, cup….2nd use the ______ point, cup…and finish with the pointed _____ brush.

A

green…. yellow…jiffy

60
Q

When applying GLAZE, post polish, I ______, apply ______, _______ for 20 seconds, and then ______ with gauze and rinse VIGOROUSLY!

A

ETCH, glaze, cure, WIPE (BPA free dentistry yo!)

61
Q

When entering into the patient’s chart: I include the _____, the _____ and surfaces treated, the ______ and rationale for Tx, how I kept things contained with _______ and which ______ I used.. Then of course that I gave ______ instructions.

A

date….teeth….diagnosis….isolation…materials….post-op

Operative Dentistry (25 decks)

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