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Tim's Cards > Operative II - E1 > Flashcards

Operative II - E1 Flashcards

1
Q

3 advantages to Gold:

2 Disadvantages:

A

Less tooth removed (than crown), protects cusps, wear rates similar to enamel

Must have good tooth structure, Can’t oppose ceramic

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2
Q

What gold technique involves the least amount of crown removed?

A

Inlays

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3
Q

3 Disadvantages to Gold Inlays:

A

Relies on tooth strength to retain

Doesn’t protect cusps

Contraindicated for Endo or 2nd molars

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4
Q

2 Contraindications for Gold Inlays:

A

Endo

2nd Molars

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5
Q

Gold Onlays protect cusps and have what advantage over a Crown?

A

Less tooth removed

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6
Q

Gold Onlays rely on what?

A

Sound tooth structure

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7
Q

What is the most protective of all restorations?

A

Gold Crowns

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8
Q

Gold Crowns shouldn’t oppose what?

A

Ceramics

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9
Q

A Gold Inlay is _____ coronal

Gold Onlay is ____ coronal

A

Intra

Extra

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10
Q

A Gold Inlay is used only when enough tooth remains and doesn’t protect the tooth, and a Gold Onlay is only used if there are missing…

A

Cusps

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11
Q

T/F

An onlay prep has adequate retention and resistance form derived from both intra and extra coronal factors

A

True

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12
Q

In order to do a Gold Onlay you must have a ______ tooth with fractures that are where?

A

Vital

limited to coronal structure

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13
Q

5 Contraindications for Gold Onlays:

A

Bruxers

Aesthetics

Opposing ceramics

2nd Molars

Endo treated (brittle)

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14
Q

Why are Endodontically treated teeth contraindicated for Gold Onlays?

A

Brittle

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15
Q

An Onlay is by definition a conservative ______

A

Partial Crown

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16
Q

T/F

There is less chance of pulpal pathology since less tooth is removed in a Gold Onlay

A

True

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17
Q

Where are the margins in a Gold Onlay?

A

Supra-gingival

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18
Q

In a Gold Onlay prep, External walls are _______

Internal walls are _______

A

Converging

Diverging

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19
Q

T/F

For Gold Onlays, all internal line angles should by rounded

A

True

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20
Q

T/F

Gold can be thinner than ceramics, therefore preps can be more conservative

A

True

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21
Q

Gold Onlay prep - non-functional cusp reduced:

Functional cusp reduced:

A
  1. 0mm (greater than or equal to)

1. 5mm (greater than or equal to)

22
Q

T/F

Gold is dimensionally stronger than ceramic or amalgam

A

True

23
Q

Prep for Gold Onlay: angle of departure can be ______ than 90 degrees and the Isthmus may be ______

A

less than

narrower

24
Q

2 reasons to Hood/Shoulder or Cover the functional cusp:

A

Functional cusp weak

Isthmus deep

25
Q

Thickness of the Hood margin:

Height of Hood should be enough to ____ the cusp, which is usually below _____

A

1.0mm

protect, the pulpal floor

26
Q

Gold is retained by what?

A

Friction

27
Q

Because Gold is retained by Friction, the margins need to fit well and the Marginal Gap must be how wide?

A

30-50 microns

28
Q

Taper of Gold Onlay prep:

For retention, add boxes where?

Add grooves where?

A

6 degrees

Accessory grooves

In boxes

29
Q

Slots or troughs that add retention to Onlay preps do what?

A

Increase surface area

*must be divergent

30
Q

An extracoronal extension onto the facial/lingual surface just past the proximal line angle of the tooth (increases retention/resistance)

A

Skirting

31
Q

How much interproximal separation is required for Gold Onlay preps?

Gingival floor of box how wide?

Functional bevel:

Non-functional bevel

Isthmus dimensions:

A
  1. 5mm
  2. 2mm
  3. 0 - 1.5mm
  4. 5 - 0.75mm

2mm x 2mm

32
Q

New bur w/ 3 degree divergence per side:

A

8847 016

33
Q

In the clinic, check for clearance in Lateral Function

A

True

34
Q

The Hood should be located _____ to the pulpal floor

A

Apical

35
Q

2 reasons to Hood the Functional Cusp:

A

Reinforces functional cusp

Improves retention

36
Q

Where is the Hood placed?

Why?

A

Below pulpal floor

prevents cusp fracture

37
Q

Where would a skirt be larger to improve surface area for retention?

A

Distal

38
Q

What is the function of cutting a bevel on the Functional Cusp?

A

Align cusps w/ adjacent teeth

39
Q

Double bite, closed mouth, triple tray, check bite, and dual arch technique all mean the same thing

A

True

40
Q

What occlusion Type must a pt have to use Double Bite (triple tray)?

A

Type I occlusal scheme (no alteration)

41
Q

When use Metal Ion provisional?

When Resin (integrity)?

A

tooth significantly broken

tooth mostly intact

42
Q

How to size a Metal Ion Temporary?

A

correct M-D width

43
Q

If Metal Ion provisional has good retention…

If it is loose…

A

Cement w/ B and T

Add acrylic, then cement

44
Q

Is anesthesia ever required for the cementation process?

A

yes

45
Q

When should Prox contacts be checked when placing a gold crown?

A

First thing

after provisional is taken off, when first placed, but BEFORE cementation

46
Q

When first placing a crown (before cementation), how do you check Prox contacts?

A

floss M and D

47
Q

If the Gold Crown doesn’t seat fully, use a ______ abrasive to adjust the marked area of the Prox contacts

A

rubberized

*repeat process until perfect

48
Q

Preparing for final cementation, _____ the inside of the olay, _____ the tooth, ______ the field (w/ throat pack) coat the crown making sure all ____ are covered, have the pt occlude on a ______.

*recheck margins, crown fit, clean, floss

A

sand blast

pumice

isolate

margins

bite stick

49
Q

Check Occlusal clearance in _____ and ______

*for prep

A

MIP

Lateral Excursions

50
Q

If a crown doesn’t seat fully, use _____ to mark the IP spot that’s giving trouble

A

Articulating paper

Tim's Cards (140 decks)

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