Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Operative 1 > Class 2 Restoration > Flashcards

Class 2 Restoration Flashcards

1
Q

A Class II amalgam preparation has an ____________ on the interproximal.

A

open side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A ____________ of some type is required to address that A Class II amalgam preparation has an open side on the interproximal

A

matrix band

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The Functions of a Good Matrix Band

A
  1. Has enough ridgity to resist to much deformation
  2. assists in establich proper anatomy
  3. prevents excess amalgam from getting into gingival margins
  4. convential to install
  5. easy to remove
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

TLDR Can’t be

A

too stiff or thick.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The universal (tofflemire) matrix includes

A
  • tofflemire band
  • tofflemire retainer
  • wooden wedge
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

when Inserting Band into the Tofflemire Retainer start by turn turning inner nut ________________ until slot vice is about ________ from the guide channels.

A

counterclockwise; 1/4 inch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

the wider opening in loop is _________ the occlusal of the tooth

A

toward

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Slot in slot vice is toward the _____ of the tooth

A

Gingival

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the most common way to install the Tofflemire Band on the Tooth

A
  • Retainer on the Buccal Side
  • Band Emerges From One of the Side Guide Channels
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the second way to install the Tofflemire Band on the Tooth?

A
  • Retainer on the Lingual Sid
  • Requires use of a Contra-Angle
    Retainer
  • Useful with missing Buccal Tooth
    Structure.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the 3rd way to install the Tofflemire Band on the Tooth

A
  • The Band Emerges Through the Middle Channel
  • more usefull in maxilla
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

in clincial cases if the band does not fit

A

cut the “apron” off with scissors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

in clinical cases if the band needs to flare out more to restore convexity

A

remove the band assembly and use a ball burnisher and egg burnisher with the band resting on a paper pad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

take care not to trap the ______ between the damn and tofflemire band

A
  • rubber dam
  • gingival tissue
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

if there is a open margin between the band and tooth use

A

wedge

placed correctly*****

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

do not let the wedge force the

A

band into the box

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

if the there is an especially wide
interproximal space and a gingivally deep
box you can

A

double wedge (horizontally from the facial and the
lingual)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

if there is ingival recession and a proximal
box of moderate depth you can

A

double wedge (stacked” fashion to close the
gingival margin)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

if there is an interproximal fluting (root concavity) at margin you need to

A

Insert wedge at an
angle through the
more open embrasure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

when loading the amalgam into a class 2 prep where do you unload it first

A

into the box

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

which portion of the almalgam class 2 should you condense first?

A

the box

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

voids are often a result of

A

placing too much
amalgam in the box before condensing the first tim

23
Q

if the retainer was installed correctly, it will withdraw ____________ from the band.

A

occlusally

24
Q

on a two surface amalgam remove the band first from which side?

A

the non restored side

25
Q

____________THE GINGIVAL MARGINAL EXCESS ON THE BOX.

A

CARVE AWAY

26
Q

what are the 3 instruments that you can use to carve away the gingical margin excess

A
  • hollenback carver
  • wiland carver
  • 34-35 Jaquette Scaler
27
Q

make sure the marginal ridge is equal heights to the

A

adjacent tooth

28
Q

how do you remove the rubber dam after you have placed the class 2 restoration?

A
  • snip the septa between the teeth
  • dont try to pull off
29
Q

in live pt you need to

A

adjust occlusion

30
Q

Dark bulls-eye is

A

high occlusal mark

31
Q

what is the most effective tool for adjusting partially set amalgam?

A

discoid carver

32
Q

overburnishing can cause

A

excess mercury to be brought to the surface

this weakens the amalgam

33
Q

we want the interproximal area to

A
  • contact
  • have no overhang
34
Q

marginal ridge has a _________ that is ______ to the long axis of the tooth

A

straight area; perpendicular

35
Q

oxygen inhibited layer is the

****

A
  • sticky uncured layer left on the surface
  • oxygen in air interferes with polymerization on surface of COMPOSITE
36
Q

cure

A

again after you remove the matrix

37
Q

what is different when placing composite that we do not do in amalgam?

A
  • etch
  • bond
  • incrementally placed
  • light cure
38
Q

do not use ______ matrix band

A

clear

39
Q

how long do you place etch on enamel?

A

20-30 secs

40
Q

how long do you place etch on denitn?

A

15-20secs

41
Q

selective etch is

A

ONLY FOR ENAMEL

42
Q

once etched the enamel will

A

have a whitish surface

43
Q

do not ______ the dentin

A

desiccate

44
Q

if you desiccate the dentin this causes

A

collapsse of the collagen layer and reduced bond strength

45
Q

what is placed first bond or etch?

A

etch

46
Q

once bond is placed

A

gently blow air

thins the bond

47
Q

where do you first place the composite in a class two?

A

in the box

48
Q

when placing composite in increments these should not exceed

A

2mm

49
Q

placeing the composite in increments minimizes

A

stress on materal and tooth due to polymerizaiton shirnkage

50
Q

when should you place the final anatomy for composite

A

before curing

51
Q

what can cause voids in the composite?

A
  • pull back (instrument)
  • tug back (syringe)
52
Q

polishing the compostire removes

A

the oxygen inhibited layer

53
Q

when can you polish a composite

A

after you have properly finsihed it

SAME DAY

54
Q

Proper finishing and polishing

A

INCREASES LONGEVITY OF RESTORATIONS

Operative 1 (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions