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Fixed II > Final > Flashcards

Final Flashcards

1
Q

Lingual first plane converges at what angle to facial first plane

A

6-10 degrees

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2
Q

Mesial proximal and distal proximal of lingual first plane should converge at

A

6-8 degrees

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3
Q

Inclination of maxillary incisors

A

30 degrees labial

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4
Q

Width of shoulder

A

1.2 mm

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5
Q

Bur used for shoulder

A

702

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6
Q

Bur used for chamfer

A

242

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7
Q

Football bur

A

285

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8
Q

Thin bur for proximal

A

747

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9
Q

MCC advantages

A 
Strength of metal
Esthetics of ceramic
Retention, resistance
Used for FDP
Abutment for RPD
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10
Q

MCC disadvantages

A 
Tooth reduction
Subgingival margin can cause perio problems
Inferior esthetics to ACC
Opposing tooth wear
High lab costs
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11
Q

MCC contraindications

A 
Active caries
Untreated perio disease
Large pulp chaber
Reduced esthetic demand
More conservative can be used
Parafunctional activity
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12
Q

Principles of tooth prep

A

Subtractive process
Restorative materials dictate reduction
Retention, resistance form
Biological factors

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13
Q

Provisionals can be used to

A

determine therapeutic effectiveness of a specific treatment

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14
Q

Mechanic principles of provisional

A

Resist functional loads
Resist removal forces
Maintainin interabutment alignment

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15
Q

Critical range for high speed with no water in seconds

A

20-25

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16
Q

Present factors leading to pulp death

A 
Perp trauma
Microb exposure
Desiccation
Chemical exposure
Thermal exposure
17
Q

Strength of polymethyl methacrylate resin

A

1/20th of metal ceramic allows–>more fracture (5 percent)

18
Q

Jet chemical

A

Polymethyl methacrylate

19
Q

Trim chemical

A

Polyethyl methacrylate

20
Q

Provisa chemical

A

Bis-GMA

21
Q

Tg of trim compared to jet

A

Trim Tg: 65 degrees

Jet Tg: 100-120 degrees

22
Q

____ molecular weight monomers do what with bisGMA

A

Higher molecular weight reduce shrinkage

23
Q

BisGMA is based on

A

Dimethylacrylates

24
Q

Polymerization steps

A

Activation
Initiation
Propogation
Termination

25
Q

Density of polymer vs monomer

A

1.2g/cm vs .94g/cm Happens because of shrinkage

26
Q

Trim reaches a temperature of ____ after ____ mintues

A

48 degrees in 10 mintues

27
Q

Highest temp to lowest

A

Jet
Trim
Bis-GMA

28
Q

Materials dont go past 35 degrees until

A

6 minutes

29
Q

Shrinkage percentage

A

6 percent volumetric

30
Q

Prefabricated crown steps

A 
Measure
Select crown
Adjust
Filling material
Bite adjustment
31
Q

Minimal preparations

A

Shorter margins
Only enamel layer
Break contacts
Dont worry about undercuts

32
Q

Relining provisional shell

A 
Internal relief: common on lingual
Internal trimming
Internal stainnig
Reline
Tirmming
Finish, Polish
33
Q

Occlusal contact and interproximal contact

A

Occlusal: one layer of shimstock
Interproximal: two layers of shimstock

Fixed II (4 decks)

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