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Operative > Quiz > Flashcards

Quiz Flashcards

1
Q

Overtriturated amalgam is _

Undertriturated amalgam is _

A

Soupy

Grainy, crumbly

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2
Q

3 purposes of condensation

A

Amalgam on walls, line angles and margins

Minimize voids and maintains homogeneity

Residual mercury to surface

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3
Q

The two sides of the Oregon 2 condenser:

Two sides of the Oregon 4 condenser:

A
  1. 0/1.5

2. 0/3.0

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4
Q

Amalgam should be condensed in what direction

A

Center to periphery

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5
Q

Pull stroke goes in what direction

Push stroke goes in what direction

A

Parallel to the margin

From tooth structure to amalgam

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6
Q

No. 1 matrix bands v. No. 2

A

No 1 is straight, 2 has the bumps

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7
Q

6 purposes of matrix bands

A
  1. Wall against which one can condense
  2. Re-establish proximal contact of restoration with adjacent tooth
  3. Aids in isolation
  4. Contains amalgam
  5. Helps prevent voids
  6. Helps shape proximal contours
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8
Q

3 functions of wedge

A
  1. Forms gingival edge of matrix band against gingival CSM, prevents gingival flash
  2. Separates teeth slightly to compensate for band thickness
  3. Stabilizes matrix band
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9
Q

11 Amalgam steps

A
  1. Proximal areas
  2. Occlusal areas
  3. Overfill
  4. Anatomic burnisher
  5. Marginal ridges/occlusal embrasures
  6. Clear occlusal flash
  7. Remove matrix band
  8. Evaluate facial, lingual, gingival walls for flash/voids
  9. Define/deepen grooves/fossae, smooth ridges
  10. Remove rubber dam and evaluate occlusion
  11. Self evaluate
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10
Q

Advantages of quadrant dentistry
For patient:
For dentist:

A

Less appointments, discomfort

More efficient, productive

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11
Q

Indications for quadrant dentistry

A

Multiple lesions

Patient needs general anesthesia

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12
Q

Contraindications for quadrant dentistry

A

Lack of experience for dentist

Patients with TMJ dysfunction
Patients who can’t stay reclined for long

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13
Q

Amalgam is high copper if the copper % is over

A

12%

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14
Q

Permite C composition

A 
Ag - 56%
Sn - 27.9
Cu - 15.4
In - 0.5
Zn - 0.2
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15
Q

When to replace a cusp

A

Facial or lingual extension exceeds 2/3 the distance from a primary groove towards the cusp tip or between facial lingual cusps

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16
Q

The three types of pins

A

Cemented
Friction locked
Threaded

17
Q

Brand of threaded pins

A

Thread mate system, whaledent

18
Q

Regular TMS system
Color code:
Drill diameter:
Pin diameter:

A

Gold

  1. 68
  2. 78
19
Q

Minim TMS system
Color code:
Drill diameter:
Pin diameter:

A

Silver

  1. 53
  2. 61
20
Q

Minikin TMS system
Color code:
Drill diameter:
Pin diameter:

A

Red

  1. 43
  2. 48
21
Q

Minuta TMS system
Color code:
Drill diameter:
Pin diameter:

A

Pink

  1. 34
  2. 38
22
Q

We use _ TMS system

A

Minim

23
Q

Dentin conditioner is made of

A

Polyacrylic acid

24
Q

Acid etch is

A

Phosphoric acid

25
Q

CaOH does what

A

Stimulates reparative dentin

26
Q

2-2-2-2 rule

A

2 mm pin hole depth
2 drill diameters inside DEJ
2 mm length of pin
2 mm amalgam over pin

27
Q

6 principles of cavity prep for amalgam

A 
Outline
Resistance
Retention
Convenience
Finishing
Debridement
28
Q

Outline form is governed by what 3 principles

A

Conservation of tooth structure
Location and extent of carious lesion
Position of pit and fissure

29
Q

All tooth preparations need to do 3 things

A

Remove caries
Remove weak tooth structure
Protect pulp

30
Q

Healthy state is defined by

A

No more disease
Normal function and form
Esthetically pleasing

31
Q

Resistance form is so that the tooth and restoration can withstand what forces

A

Directed towards the long axis of the tooth

32
Q

To achieve resistance you have to do what 5 things

A 
Remove undermined surface enamel
Flat pulp floor
Correct depth
Well defined rounded internal line and point angles
Use right type of restorative material
33
Q

Retention and convenience form

A

Restoration should stay in

Smallest end of condenser fits everywhere

Operative (2 decks)

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