Exam 3: Intro to Class II lesions Tx Plan Flashcards Preview

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Flashcards in Exam 3: Intro to Class II lesions Tx Plan Deck (55):
1

If the proximal caries has NO involvement with the occlusial pits and fissures what is the prep design? What is the design if it does spread to pits and fissures?

no occlusal-slot prep....occ-traditional prep

2

___% of lesions are cavitated if caries hits the DEJ?

60%

3

Once the DEJ is invaded, caries professes rapidly. SO MUST _______!

RESTORE

4

What are the 2 advantages of composites?

aethetics, conservative

5

What are the 4 dis-advantages to composite?

cost, wear, seal, shrinkage

6

What are 4 advantages of amalgam?

1.strength 2.wear 3.value 4.corrosion

7

What are 2 disadvantages of amalgam?

1.aesthetics 2.mercury

8

What are 3 advantages of GI?

conservative, seal, fluoride

9

What are 3 disadvantages of GI?

Aesthetics, wear, acid soluble!

10

How long dose the F- release last in GI?

only the first 2-4 hours

11

What are the 2 advantages of gold?

Strength and contour

12

What are the 3 disadvantages to gold?

costs, visits, aesthetics

13

What are the 3 advantages of ceramic?

aesthetics, contour, longevity

14

What are 2 disadvantages of ceramics?

costs, visits

15

What is the first factor in a class II design?

Remove Decay

16

Keep ridges as thick as possible! More then __mm

1mm!!

17

The facial extension should be no more then ___mm

0.5mm

18

The lingual extension is AROUND ___mm

0.5mm

19

What are the 4 reasons we extend the prep to break contacts?

1.Allow vision 2.Remove excess material 3.place matrix band 4.Avoid damaging adjacent tooth

20

What is the GINGIVAL separation going to be on a slot prep?

0.5mm

21

Keep the isthmus ___mm and in the ____ of the F-L of the tooth!

1mm....center

22

With out your 90 degree angle of departure, the amalgam will be ____ when it is thin in that area.

weak

23

What is the # source of tooth fracture?

Isthmus width!

24

The contact area in MOST teeth is typically _____ to the central groove.

facial

25

For the axial depth-cut into the axial wall at least ___mm PAST the DEJ.

0.5mm

26

MINIMAL width of the gingival floor is ___mm but depends on the decay/tooth...like for the plastic teeth, PM-___mm...Molars ___-___mm

1.0mm...1.0mm....1.2-1.5mm

27

Axial wall is going to be _____ to the DEJ.

parallel

28

MINIMAL depth of the pulpal floor is ___mm and ___mm at the walls.

1.5mm...2.0mm at walls

29

_______ are permissible on the pulpal floor, BUT if there is ______ under it, take her out.

Enamel Rod islands....staining

30

Retention grooves- are in ______, follow the _____, do not directly cut into the _____ wall, placed into the _____ and _____ wall and the hight is from the ______ to the ______.

dentin....DEJ...axial...facial and lingual...gingival floor to the pulpal floor

31

What two directions do the retention grooves prevent displacement of amalgam?

Occlusially and Proximally

32

Retention grooves-cut to the depth of the _____ bur.

1/4 round bur

33

Step 1 - ______ form Step 2 - ________ Step 3 - _______ form Step 4 - ________ form
Step 5 - _______ of remaining caries in dentin Step 6 - Finish ______ walls
Step 7 - ________ the cavity preparation

outline...retention...resistance....convenience...removal...enamel...cleanse

34

The number one rule for Tx recommendations...

INVOLVE the patient in the decisions!!

35

For maxillary PM's the _______ extension tends to be a STRAIGHTER line angle, especially in the ____ PM.

lingual...2nd PM

36

The ______ PM box form tends to be smaller F-L at the mesial c/o smaller contact

1st PM

37

The mandibular 1st PM prep does NOT cross the ________ ridge. Its a very delicate, small, and challenging prep. Also remember the pulpal floor will be _______.

transverse...angled!

38

For mandibular 2nd PM's the prep will follow the ___,__, or ___ groove patterns.

y, c, or h

39

For mandibular molars, the isthmus tends to be slightly ______ to the central groove in order to keep it in the center of the tooth.

FACIAL

40

For maxillary molars, Do not cut into the _______ ridge...Dovetail is _______ to oblique ridge...____ groove may oftentimes be involved

oblique...parallel...DL

41

Which has better corrosion resistance: low-copper amalgam or high-copper amalgam?

High-copper amalgam has better corrosion resistance

42

Although _____ containing amalgam has 20-50% greater longevity, we don't use it at ASDOH.

zinc

43

Dispersalloy is ________ cut AND it has ZINC!

ADMIXED

44

Megalloy is _______ cut and does not contain zinc.

spherical

45

Which condenser is always used first?

the small condenser!

46

For BONDED amalgam, the _____ bond strength is excellent, but long term studies are ______.

initial... mixed

47

In a matrix band with wings, which end goes gingival?

The wings go gingivally

48

What do you use an angled tofflemire for?

a lingual approach to the tofflemire

49

The matrix band is approx ___mm above the prep, and at least ___mm below the gingival margin.

1mm..1mm

50

The wedge is interred from the _____ OR the largest ______.

lingally...embrasure

51

Use the ______ wedge possible.

largest

52

If you have a deep box (haha), insert the _____ matrix band.

winged (love-handle)

53

A well triturated amalgam should be ______ and pliable.

shiney

54

When burnishing you move from ______ to _____ and when carving you move from ______ to ______.

amalgam to tooth....tooth to amalgam

55

Must wait ____ hours before using a _____ bur to work on amalgam.

24 hours...7404