Question 1

The composition of inlay wax is complex depending on its use and may include which of the following wax components?

Accepted Answer

A)  Carnauba 
B)  Ceresin 
C)  Paraffin 
D)  A, B, and C 
E)  A and C only

Question 2

Which of the following statements is true of pattern waxes and resins?

Accepted Answer

A)  They must possess high flow at their working temperature. 
B)  They must have a melting range lower than the environment in which the pattern is made. 
C)  Too high of a melting range may make development of residual stresses a problem. 
D)  All pattern waxes and resins must burn out with a residue.

Question 3

Manufactured in ready-made shapes,_____ wax is used for partial denture frameworks.

Accepted Answer

A)  casting 
B)  baseplate 
C)  inlay 
D)  corrective

Question 4

Wax patterns should be carved with instruments at ____°

Accepted Answer

A)  7 
B)  17 
C)  27 
D)  37 
E)  47

Question 5

Sticky wax will break rather than become distorted if the assembled pieces move.The pieces of sticky wax can then be rejoined in their proper relationship.

Accepted Answer

A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true; the second statement is false. 
D)  The first statement is false; the second statement is true.

Question 6

In general,_____ have the highest coefficient of thermal expansion of any dental material.

Accepted Answer

A)  ceramics 
B)  silver amalgams 
C)  waxes 
D)  gold alloys

Question 7

Utility and periphery waxes are about _____ in diameter.

Accepted Answer

A)  0.1 mm 
B)  0.5 mm 
C)  0.1 cm 
D)  0.5 cm

Question 8

Waxes have a specific melting point.Waxes are single component materials.

Accepted Answer

A)  Statement 1 is correct; statement 2 is correct. 
B)  Statement 1 is correct; statement 2 is incorrect. 
C)  Statement 1 is incorrect; statement 2 is correct. 
D)  Statement 1 is incorrect; statement 2 is incorrect.

Question 9

Boxing,utility,and sticky waxes are all examples of _____ waxes.

Accepted Answer

A)  processing 
B)  pattern 
C)  inlay 
D)  baseplate

Question 10

The release of stress at higher temperatures will cause _____ deformation.

Accepted Answer

A)  irreversible 
B)  reversible 
C)  no

Question 11

The time between finishing and investing a wax pattern should be:

Accepted Answer

A)  at least a week so the wax can relax 
B)  more than 24 hours 
C)  between 5 and 30 minutes 
D)  less than 5 minutes

Question 12

Baseplate wax is available in:

Accepted Answer

A)  round sticks. 
B)  sheets. 
C)  ready-made shapes. 
D)  strips.

Question 13

Resins used as patterns for dental restorations:

Accepted Answer

A)  have higher strength than dental waxes. 
B)  have higher flow than dental waxes. 
C)  leave a residue when they burn out. 
D)  are available as chemically cured composite resins.

Question 14

_____ waxes are used primarily in taking and pouring impressions.

Accepted Answer

A)  Sticky 
B)  Boxing and utility 
C)  Corrective impression 
D)  Bite-registration

Question 15

Of the following,which is not an advantage of using resins versus waxes to manufacture crowns,bridges,and inlays?

Accepted Answer

A)  Wax is stronger. 
B)  Wax is weaker. 
C)  Wax burns out cleanly. 
D)  Wax leaves residue. 
E)  Only A and C are advantages.
F) Only B and D are advantages.

Question 16

Casting wax is used to:

Accepted Answer

A)  fabricate wax patterns for crowns, inlays, and bridges. 
B)  form the wax pattern of the metallic framework of removable partial dentures. 
C)  build the contours of a denture. 
D)  register the details of soft tissue in a functional state.

Question 17

Which of the following waxes are categorized as processing waxes?

Accepted Answer

A)  Boxing wax 
B)  Beading wax 
C)  Sticky wax 
D)  A, B, and C 
E)  A and C

Exam 10: Waxes