Deck 18: Dental Waxes

Question 1

If excess residue remains when the wax pattern is melted out of the investment mold:

A) this will create a harder and denser product
B) this may result in inaccuracies in the object being produced
C) the melting temperature of the wax will increase
D) the melting temperature of the wax will decrease

Answer 1

this may result in inaccuracies in the object being produced

Question 2

Excess residue on a model would cause:

A) voids in the material
B) inaccuracies at casting
C) distortion
D) stained gypsum

Answer 2

inaccuracies at casting

Question 3

Which of the following is an example of a pattern wax?

A) Boxing wax
B) Inlay wax
C) Sticky wax
D) Bite registration wax

Answer 3

Inlay wax

Question 4

During fabrication of castings utilizing the lost wax technique, the wax pattern and attached sprue are encased in an investment ring into which _______ is poured.

A) silica
B) investment gypsum
C) molten gold
D) alginate

Question 5

A Type I inlay wax is used:

A) for creating wax patterns on a die
B) as an alternative to sticky wax
C) for a direct wax technique
D) as a base for all wax patterns

Question 6

Which of the following would not be a synthetic additive to dental waxes?

A) Gums
B) Fats
C) Insects
D) Minerals

Question 7

Wax patterns should be invested within _________ of carving.

A) 10 minutes
B) 30 minutes
C) 6 hours
D) 24 hours

Question 8

Which of the following kinds of waxes is used to adhere components of metal, gypsum, or resin together temporarily during fabrication and repair?

A) Corrective impression wax
B) Sticky wax
C) Inlay wax
D) Boxing wax

Question 9

Sheets of baseplate wax are usually layered to:

A) produce patterns for metal castings using the lost wax technique
B) construct the metal framework of partial and complete dentures
C) produce the form on which denture teeth are set
D) form the base portion of a gypsum model

Question 10

___________ wax is used to form the base portion of a gypsum model.

A) Baseplate
B) Boxing
C) Corrective impression
D) Utility

Question 11

Corrective impression wax is used:

A) to produce wax bite registrations for articulation of models
B) within another impression material to correct undercut areas
C) to produce a form into which gypsum is poured
D) to produce the form on which denture teeth are set

Question 12

Which of the following statements is true of inlay waxes?

A) They may be used directly in the mouth and placed onto the prepared tooth in the direct waxing technique.
B) Type I inlay wax is melted onto a die outside the mouth in a direct technique.
C) Most dentists prefer to use the direct waxing technique.
D) These waxes are generally in light colors of white or yellow.

Question 13

Waxes will begin to soften and flow once they reach their:

A) melting point
B) melting range
C) flow point
D) flow range

Question 14

Thermal expansion in dental waxes is:

A) the highest of any dental material
B) not an issue when casting
C) the cause of most distortion
D) compensated with gypsum

Question 15

As the temperature of the wax increases, the __________ of the wax decreases until the wax becomes a liquid.

A) freezing point
B) melting point
C) viscosity
D) dew point

Question 16

Which of the following kinds of waxes are used to construct the metal framework of partial and complete dentures?

A) Utility wax
B) Boxing wax
C) Casting wax
D) Baseplate wax

Question 17

Which of the following is true of boxing wax?

A) A strip of boxing wax is 3 inches wide.
B) Boxing wax is difficult to manipulate at room temperature.
C) Boxing wax is slightly tacky at room temperature.
D) Boxing wax comes in ropes that are easily manipulated at room temperature.

Question 18

Which of the following is not a delivery method for dental waxes?

A) Tins
B) Sheets
C) Rolls
D) Sticks

Question 19

In the lost wax technique for casting gold for dental restorations, a _________ is attached to the pattern to form the channel into which the molten metal will be forced.

A) die
B) sprue
C) crucible
D) casting

Question 20

Which of the following is correct about wax at room temperature?

A) Flow would be difficult to control.
B) Dimensional change is high.
C) Distortion is a problem.
D) It would burn the patient.

Question 21

Corrective impression waxes are good for:

A) filling in voided areas in impressions
B) filling in undercut areas in impressions
C) providing dimensional stability for crowns
D) providing sprues for wax patterns

Question 22

If sticky wax is torqued, it will:

A) bend in the direction of movement
B) flow at room temperature
C) break at the point of the torque
D) adhere only to other waxes

Question 23

Match the items with the correct description below.
Sticky wax

A)Used to adhere components together temporarily during fabrication and repair
B)Used to produce patterns for metal casting using the lost wax technique
C)Used to produce wax bite registrations for articulation of models
D)Used to construct the metal framework of partial and complete dentures
E)Used to form the base portion of a gypsum model

Question 24

Match the items with the correct description below.
Inlay wax

A)Used to adhere components together temporarily during fabrication and repair
B)Used to produce patterns for metal casting using the lost wax technique
C)Used to produce wax bite registrations for articulation of models
D)Used to construct the metal framework of partial and complete dentures
E)Used to form the base portion of a gypsum model

Question 25

Match the items with the correct description below.
Casting wax

A)Used to adhere components together temporarily during fabrication and repair
B)Used to produce patterns for metal casting using the lost wax technique
C)Used to produce wax bite registrations for articulation of models
D)Used to construct the metal framework of partial and complete dentures
E)Used to form the base portion of a gypsum model

Question 26

Match the items with the correct description below.
Bite registration wax

A)Used to adhere components together temporarily during fabrication and repair
B)Used to produce patterns for metal casting using the lost wax technique
C)Used to produce wax bite registrations for articulation of models
D)Used to construct the metal framework of partial and complete dentures
E)Used to form the base portion of a gypsum model

Question 27

Which of the following is not true about baseplate wax?

A) Used to set denture teeth
B) Does not deform at mouth temperature
C) Is pink to match soft tissue
D) Is subject to dimensional change

Question 28

The lost wax technique is used to fabricate:

A) crowns
B) implants
C) veneers
D) direct prosthesis

Question 29

Match the items with the correct description below.
Boxing wax

A)Used to adhere components together temporarily during fabrication and repair
B)Used to produce patterns for metal casting using the lost wax technique
C)Used to produce wax bite registrations for articulation of models
D)Used to construct the metal framework of partial and complete dentures
E)Used to form the base portion of a gypsum model