Term
13. Which of the following statements applies when describing a provisional restoration?
1. It must protect the pulp
2. It must provide positional stability
3. It must be esthetic where necessary
4. It must maintain the health of the gingival tissue
A. 1 and 2
B. 1, 2 and 3
C. 2 and 3
D. All of the above
E. None of the above |
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Definition
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Term
17. The cement type that can be controlled to provide the longest working and setting
- times are
-
A. polycarboxalate
B. glass ionomer
C. ZOP
D. ZOE |
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Definition
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Term
31. In comparing Tytin and Dispersalloy amalgams
1. Dispersalloy is high Cu, Tytin is not
2. Tytin has all spherical particles
3. Tytin requires less Hg for trituration
4. a & b
5. b & c |
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Definition
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Term
32. An impression material not suited for areas with undercuts
1. agar
2. alginate
3. ZOE paste
4. Elastomers
5. None above |
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Definition
|
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Term
33. For impression materials dispensed from tubes and mixed by hand the rule is
1. equal volumes from each tube are mixed
2. equal lengths from each tube are mixed
3. equal volumes for ZOE, equal lengths for elastomers
4. none above |
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Definition
| 2. equal lengths from each tube are mixed |
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Term
37. You've just started a baseline examination on your new patient and noticed that there is an overhang on the proximal surface of an MO amalgam restoration on tooth #19. At a later appointment you try to salvage the restoration by carving away the slight overhang. What is the instrument of choice to remove this overhang?
a. A 3M Soflex disc
b. A 14L Demeo carver
c. A 10-15-8 amalgam carver
d. A fine, thin diamond bur on your slow speed handpiece
e. A 1A carver |
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Definition
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Term
1. You prepared tooth #3 for a 7/8 PVC. The mesial and distal axial reductions are 0.7mm each. The facial and lingual reductions are 0.7mm each. The functional cusp reduction is 1.0mm. This is an example of an
A) ideally reduced preparation.
B) over reduced preparation.
C) under reduced preparation. |
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Definition
| C) under reduced preparation. |
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Term
1. The most clinically-healthy marginal configuration on any temporary crown is one which is
A) slightly sub.
B) coincident with the margin of the preparation.
C) slightly plus.
D) slightly bulky |
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Definition
| B) coincident with the margin of the preparation. |
|
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Term
1. Which of the following preparation exhibits the greatest retention form? (assume ideal wall length and parallelism)?
A) #29 FVC
B) #14 FVC
C) #14 7/8 PVC
D) #30 7/8 PVC |
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Definition
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Term
1. The wall of a mesial groove on a 7/8 PVC which contributes most to resistance
form is the _____________ wall.
A) facial
B) lingual
C) axial
D) gingival |
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Definition
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Term
1. When one decides to use a partial veneer crown for a patient it is well to
remember that
A) the PVC is more retentive than the full veneer crown.
B) the margins of the PVC are more accessible for finishing in the mouth.
C) complete seating of the PVC is more difficult to verify by direct observation.
D) with the PVC more periodontal irritation is to be expected. |
|
Definition
| B) the margins of the PVC are more accessible for finishing in the mouth. |
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Term
1. In comparing a gold FVC and a gold PVC which of the following is true?
A) A maxillary PVC is more esthetic than a FVC.
B) A FVC ultimately does less damage to the tooth.
C) A FVC requires modifications such as grooves to enhance resistance form. |
|
Definition
| A) A maxillary PVC is more esthetic than a FVC. |
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Term
18. The instrument of choice for removing excess SET amalgam from the gingival
cavosurface margin of a Class II amalgam restoration is the
A. A-carver
B. Explorer
C. ½ Hollenbeck
D. 14L deMeo carver
E. 15 hatchet |
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Definition
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Term
Mechanical intervention or cavity preparation is indicated when carious lesion does not reach the dentin-enamel junction (DEJ).
A. True
B. False |
|
Definition
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|
Term
1. The minimum thickness of amalgam restoration is 2mm for strength to resist fracture of the material.
A. True
B. False |
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Definition
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|
Term
1. Class I occlusal amalgam restoration with ¼ width of isthmus has higher chance of tooth fracture than the Class II MOD amalgam restoration with 1/3 width of isthmus.
A. True
B. False |
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Definition
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|
Term
25. Large lathe-cut particle dental amalgam:
A. can resist condensation better than spherical powder
B. require less Hg for trituration
C. less g2 (Sn-Hg) phase
D. a and c
E. all of the above |
|
Definition
| A. can resist condensation better than spherical powder |
|
|
Term
26. Smaller spherical particle amalgam alloy:
A. requires less Hg for trituration
B. more g2 (Sn-Hg) phase
C. smoother surface during carving and finishing
D. all of the above
E. A and C |
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Definition
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Term
27. Which of the following increases the hardness of amalgam alloy?
A. Cu
B. Cu, Zn
C. Cu, Ag, Au and Sn
D. Cu, In, Pd, Sn
E. Cu, In, Zn, Ag only |
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Definition
|
|
Term
28. Low-Cu dental amalgam:
A. contains g2 (Sn-Hg) phase
B. less corrosive
C. higher strength
D. a and b
E. all of the above |
|
Definition
| A. contains g2 (Sn-Hg) phase |
|
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Term
29. High-Cu dental amalgam:
A. does not contain g2 (Sn-Hg) phase
B. high early strength compared to low-Cu dental amalgam
C. is clinically the most used
D. less dynamic compared to low-Cu amalgam
E. all of the above |
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Definition
|
|
Term
30. Which element prevents oxidation of other metals in amalgam alloy?
A. Cu
B. Cu, Zn
C. Cu, Ag, Au and Sn
D. Cu, In, Pd, Sn
E. Zn |
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Definition
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Term
33. Where must the functional cusp bevel be placed when tooth #15 is being prepared
for a full veneer gold crown?
1. Mesiobuccal cusp
2. Distobuccal cusp
3. Mesiolingual cusp
4. Distolingual cusp
A. 1 only
B. 2 and 3
C. 3 and 4
D. 4 only |
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Definition
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|
Term
34. Which of the following mandibular border movements most influenced by the
morphology of the teeth?
A. Superior contact border movement
B. Anterior border movement
C. Posterior border movement |
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Definition
| A. Superior contact border movement |
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