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Operative Dentistry > Exam 3: Intro to Class II lesions Tx Plan > Flashcards

Exam 3: Intro to Class II lesions Tx Plan Flashcards

1
Q

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?

A

no occlusal-slot prep….occ-traditional prep

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2
Q

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

A

60%

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3
Q

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

A

RESTORE

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4
Q

What are the 2 advantages of composites?

A

aethetics, conservative

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5
Q

What are the 4 dis-advantages to composite?

A

cost, wear, seal, shrinkage

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6
Q

What are 4 advantages of amalgam?

A

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

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7
Q

What are 2 disadvantages of amalgam?

A

1.aesthetics 2.mercury

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8
Q

What are 3 advantages of GI?

A

conservative, seal, fluoride

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9
Q

What are 3 disadvantages of GI?

A

Aesthetics, wear, acid soluble!

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10
Q

How long dose the F- release last in GI?

A

only the first 2-4 hours

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11
Q

What are the 2 advantages of gold?

A

Strength and contour

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12
Q

What are the 3 disadvantages to gold?

A

costs, visits, aesthetics

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13
Q

What are the 3 advantages of ceramic?

A

aesthetics, contour, longevity

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14
Q

What are 2 disadvantages of ceramics?

A

costs, visits

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15
Q

What is the first factor in a class II design?

A

Remove Decay

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16
Q

Keep ridges as thick as possible! More then __mm

A

1mm!!

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17
Q

The facial extension should be no more then ___mm

A

0.5mm

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18
Q

The lingual extension is AROUND ___mm

A

0.5mm

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19
Q

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

A

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

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20
Q

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

A

0.5mm

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21
Q

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

A

1mm….center

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22
Q

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

A

weak

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23
Q

What is the # source of tooth fracture?

A

Isthmus width!

24
Q

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

A

facial

25
Q

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

A

0.5mm

26
Q

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

A

1.0mm…1.0mm….1.2-1.5mm

27
Q

Axial wall is going to be _____ to the DEJ.

A

parallel

28
Q

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

A

1.5mm…2.0mm at walls

29
Q

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

A

Enamel Rod islands….staining

30
Q

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 ______.

A

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

31
Q

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

A

Occlusially and Proximally

32
Q

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

A

1/4 round bur

33
Q

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

A

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

34
Q

The number one rule for Tx recommendations…

A

INVOLVE the patient in the decisions!!

35
Q

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

A

lingual…2nd PM

36
Q

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

A

1st PM

37
Q

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 _______.

A

transverse…angled!

38
Q

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

A

y, c, or h

39
Q

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

A

FACIAL

40
Q

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

A

oblique…parallel…DL

41
Q

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

A

High-copper amalgam has better corrosion resistance

42
Q

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

A

zinc

43
Q

Dispersalloy is ________ cut AND it has ZINC!

A

ADMIXED

44
Q

Megalloy is _______ cut and does not contain zinc.

A

spherical

45
Q

Which condenser is always used first?

A

the small condenser!

46
Q

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

A

initial… mixed

47
Q

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

A

The wings go gingivally

48
Q

What do you use an angled tofflemire for?

A

a lingual approach to the tofflemire

49
Q

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

A

1mm..1mm

50
Q

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

A

lingally…embrasure

51
Q

Use the ______ wedge possible.

A

largest

52
Q

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

A

winged (love-handle)

53
Q

A well triturated amalgam should be ______ and pliable.

A

shiney

54
Q

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

A

amalgam to tooth….tooth to amalgam

55
Q

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

A

24 hours…7404

Operative Dentistry (25 decks)

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