Question 1

Which of the following is a plant wax that may be found as a component of inlay wax?

Accepted Answer

A)   Paraffin
B)   Ceresin
C)   Carnauba
D)   BeeswaxE) A) and B)
F) A) and C)

Question 2

The _____ the coefficient of thermal expansion for waxes,the _____ the expansion as the wax is heated.

Accepted Answer

A)   higher; slower
B)   higher; greater
C)   lower; slower
D)   lower; greaterE) A) and D)
F) None of the above

Question 3

Residual stress is stress remaining in a wax as a result of manipulation during heating,cooling,bending,carving,or other manipulation.Manipulation of wax puts molecules of the wax into positions that they like and can change because of their solid state.

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.E) A) and B)
F) A) and D) B

Question 4

Waxes:

Accepted Answer

A)   melt at a single temperature.
B)   do not have a discrete melting point at one temperature.
C)   are mixtures of different components.
D)   A and C.
E)   B and C.F) B) and E)
G) A) and B)

Question 5

Which of the following waxes are categorized as pattern waxes?

Accepted Answer

A)   Baseplate wax
B)   Utility wax
C)   Inlay wax
D)   A, B, and C
E)   A and CF) B) and D)
G) A) and B)

Question 6

The flow of corrective impression wax at mouth temperature is ____%.

Accepted Answer

A)   10
B)   25
C)   50
D)   75
E)   100F) B) and D)
G) A) and E)

Question 7

Which type of wax is used to hold the position of denture teeth before the denture is processed in acrylic?

Accepted Answer

A)   Utility wax
B)   Sticky wax
C)   Corrective impression wax
D)   Baseplate waxE) A) and B)
F) A) and C)

Question 8

Which type of wax may be molded around an unpoured impression to help contain the stone when it is vibrated into the impression?

Accepted Answer

A)   Inlay wax
B)   Sticky wax
C)   Boxing wax
D)   Corrective impression waxE) None of the above
F) All of the above

Question 9

In order to prevent residual stresses from forming:

Accepted Answer

A)   wax should be carved at temperatures well below its melting range.
B)   wax should be burnished at temperatures well below its melting range.
C)   wax patterns should be carved with warm instruments.
D)   melted wax should be added in large increments.E) None of the above
F) B) and C) C

Question 10

Pattern or casting waxes are used to fabricate:

Accepted Answer

A)   inlays.
B)   veneers.
C)   crowns.
D)   A, B, and
E)   A and C only.F) A) and B)
G) None of the above E

Question 11

Which of the following statements is true of the property of flow for dental waxes?

Accepted Answer

A)   Flow is highly dependent on temperature and time.
B)   For pattern waxes, flow at room temperature is a highly desirable property.
C)   For processing waxes, flow at room temperature is a highly desirable property.
D)   A and B are true statements.
E)   A and C are true statements.F) All of the above
G) A) and B)

Question 12

Organic molecules in waxes are composed primarily of long chains containing carbon,hydrogen,and oxygen.The long chains allow waxes to be flexible at room temperature or sticky as solids or liquids.

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.E) B) and C)
F) A) and B)

Question 13

_____ wax is used as a wax veneer over an original impression to register the detail of soft tissues in a functional state.

Accepted Answer

A)   Bite-registration
B)   Sticky
C)   Inlay
D)   Corrective impressionE) All of the above
F) B) and C)

Question 14

Component waxes in dental waxes are usually _____ molecules with _____ molecular weights.

Accepted Answer

A)   inorganic; high
B)   inorganic; low
C)   organic; high
D)   organic; lowE) B) and D)
F) All of the above

Question 15

At _____ temperatures,waxes hardly flow at all,but as the temperature approaches the melting _____ of the wax,the flow increases.

Accepted Answer

A)   low; point
B)   low; range
C)   high; point
D)   high; rangeE) None of the above
F) A) and B)

Question 16

Which of the following waxes may be used for bite registration?

Accepted Answer

A)   Baseplate wax
B)   28-gauge casting wax
C)   Bite-registration wax
D)   A, B, and C
E)   A and CF) A) and B)
G) A) and C)

Question 17

The purpose of sticky wax is to:

Accepted Answer

A)   correct an original impression.
B)   gain accurate articulation.
C)   temporarily hold metal together.
D)   maintain a specific pattern.E) B) and D)
F) B) and C)

Question 18

Sticky wax is:

Accepted Answer

A)   soft and pliable at room temperature.
B)   hard and brittle at room temperature.
C)   used to assemble metallic or resin pieces temporarily in position.
D)   both A and C.
E)   both B and C.F) B) and D)
G) None of the above

Question 19

Which of the following types of wax is used to fabricate wax patterns for crowns,inlays,and bridges?

Accepted Answer

A)   Casting wax
B)   Inlay wax
C)   Boxing wax
D)   Utility waxE) B) and C)
F) B) and D)

Question 20

The lost-wax technique uses _____ wax to produce crowns,inlays,and veneers.

Accepted Answer

A)   casting
B)   inlay
C)   baseplate
D)   all of the above
E)   only A and BF) A) and B)
G) A) and C)

Exam 10: Waxes

Which of the following is a plant wax that may be found as a component of inlay wax?

Correct AnswerverifiedShow Answer

The _____ the coefficient of thermal expansion for waxes,the _____ the expansion as the wax is heated.

Correct AnswerverifiedShow Answer

Residual stress is stress remaining in a wax as a result of manipulation during heating,cooling,bending,carving,or other manipulation.Manipulation of wax puts molecules of the wax into positions that they like and can change because of their solid state.

Correct AnswerverifiedB

Waxes:

Correct AnswerverifiedShow Answer

Which of the following waxes are categorized as pattern waxes?

Correct AnswerverifiedShow Answer

The flow of corrective impression wax at mouth temperature is ____%.

Correct AnswerverifiedShow Answer

Which type of wax is used to hold the position of denture teeth before the denture is processed in acrylic?

Correct AnswerverifiedShow Answer

Which type of wax may be molded around an unpoured impression to help contain the stone when it is vibrated into the impression?

Correct AnswerverifiedShow Answer

In order to prevent residual stresses from forming:

Correct AnswerverifiedC

Pattern or casting waxes are used to fabricate:

Correct AnswerverifiedE

Which of the following statements is true of the property of flow for dental waxes?

Correct AnswerverifiedShow Answer

Organic molecules in waxes are composed primarily of long chains containing carbon,hydrogen,and oxygen.The long chains allow waxes to be flexible at room temperature or sticky as solids or liquids.

Correct AnswerverifiedShow Answer

_____ wax is used as a wax veneer over an original impression to register the detail of soft tissues in a functional state.

Correct AnswerverifiedShow Answer

Component waxes in dental waxes are usually _____ molecules with _____ molecular weights.

Correct AnswerverifiedShow Answer

At _____ temperatures,waxes hardly flow at all,but as the temperature approaches the melting _____ of the wax,the flow increases.

Correct AnswerverifiedShow Answer

Which of the following waxes may be used for bite registration?

Correct AnswerverifiedShow Answer

The purpose of sticky wax is to:

Correct AnswerverifiedShow Answer

Sticky wax is:

Correct AnswerverifiedShow Answer

Which of the following types of wax is used to fabricate wax patterns for crowns,inlays,and bridges?

Correct AnswerverifiedShow Answer

The lost-wax technique uses _____ wax to produce crowns,inlays,and veneers.

Correct AnswerverifiedShow Answer

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The _ the coefficient of thermal expansion for waxes,the _ the expansion as the wax is heated.

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B

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C

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E

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Component waxes in dental waxes are usually _ molecules with _ molecular weights.

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At _ temperatures,waxes hardly flow at all,but as the temperature approaches the melting _ of the wax,the flow increases.

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