Question 1

Flexible rubber bowls are used to mix which material(s)?

Accepted Answer

A) Powder and liquid, such as irreversible hydrocolloid (alginate) 
B) Plaster or stone for pouring up models 
C) Reversible hydrocolloid 
D) Polyvinylsiloxane 
E) A and B are both correct. 
A) Powder and liquid, such as irreversible hydrocolloid (alginate) 
B) Plaster or stone for pouring up models 
C) Reversible hydrocolloid 
D) Polyvinylsiloxane 
E) A and B are both correct. E

Question 2

How should an impression be cared for once it is removed from the mouth?

Accepted Answer

A) Sterilized 
B) Disinfected 
C) Submerged in a water bath 
D) Rinsed off and poured immediately 
A) Sterilized 
B) Disinfected 
C) Submerged in a water bath 
D) Rinsed off and poured immediately B

Question 3

Why do impression trays have perforations?

Accepted Answer

A) Provides for easier clean-up after pouring. 
B) Provide adequate air circulation for proper setting times. 
C) Allow material to push through the holes, creating a mechanical lock that keeps the material in place. 
D) All of the above are correct 
A) Provides for easier clean-up after pouring. 
B) Provide adequate air circulation for proper setting times. 
C) Allow material to push through the holes, creating a mechanical lock that keeps the material in place. 
D) All of the above are correct C

Question 4

The automixer is used for which type of material?

Accepted Answer

A) Alginate (irreversible hydrocolloid) 
B) Reversible hydrocolloid 
C) Polyvinylsiloxane 
D) None of the above. 
A) Alginate (irreversible hydrocolloid) 
B) Reversible hydrocolloid 
C) Polyvinylsiloxane 
D) None of the above.

Question 5

What is the purpose of a vacuum mixing unit?

Accepted Answer

A) Remove powder dust from the air as the material is mixed. 
B) Remove excessive air from the material while mixing. 
C) Mix gypsum materials to the proper consistency. 
D) All of the above 
A) Remove powder dust from the air as the material is mixed. 
B) Remove excessive air from the material while mixing. 
C) Mix gypsum materials to the proper consistency. 
D) All of the above

Question 6

The use of a water-cooled tray describes which impression technique?

Accepted Answer

A) Irreversible hydrocolloid 
B) Reversible hydrocolloid 
C) Polysulfide 
D) Polyester 
A) Irreversible hydrocolloid 
B) Reversible hydrocolloid 
C) Polysulfide 
D) Polyester

Question 7

Which of the following materials would NOT be mixed in a flexible rubber bowl?

Accepted Answer

A) Stone 
B) Plaster 
C) Die stone 
D) Reversible hydrocolloid 
E) Irreversible hydrocolloid 
A) Stone 
B) Plaster 
C) Die stone 
D) Reversible hydrocolloid 
E) Irreversible hydrocolloid

Question 8

Which dental instrument is used to mix materials such as irreversible hydrocolloid and gypsum?

Accepted Answer

A) Flexible alginate spatula 
B) Flexible rubber bowl 
C) Mixing gun 
A) Flexible alginate spatula 
B) Flexible rubber bowl 
C) Mixing gun

Question 9

Bite registration trays come in a selection of right, left, and anterior.

Accepted Answer

A) True 
 B)False

Question 10

When would one use a triple tray for impressions?

Accepted Answer

A) To take a maxillary impression along with the occlusal bite. 
B) To take a mandibular impression along with the occlusal bite. 
C) To take a maxillary impression along with a mandibular impression. 
D) To take a maxillary impression, mandibular impression, and an occlusal bite. 
E) None of the above. 
A) To take a maxillary impression along with the occlusal bite. 
B) To take a mandibular impression along with the occlusal bite. 
C) To take a maxillary impression along with a mandibular impression. 
D) To take a maxillary impression, mandibular impression, and an occlusal bite. 
E) None of the above.

Question 11

Which of the following statements is incorrect about the use of a model trimmer?

Accepted Answer

A) Glasses must be worn when using a model trimmer. 
B) Utility gloves must be worn when using a model trimmer. 
C) A mask must be worn when using a model trimmer. 
D) A splash guard must be in place on the model trimmer. 
A) Glasses must be worn when using a model trimmer. 
B) Utility gloves must be worn when using a model trimmer. 
C) A mask must be worn when using a model trimmer. 
D) A splash guard must be in place on the model trimmer.

Question 12

Which lab instrument is beneficial in separating an impression from the poured and set model?

Accepted Answer

A) Lab knife 
B) Lab spatula 
C) Model trimmer 
D) Flexible metal spatula 
A) Lab knife 
B) Lab spatula 
C) Model trimmer 
D) Flexible metal spatula

Question 13

The flexible alginate spatula does not require sterilization following use.

Accepted Answer

A) True 
 B)False

Question 14

In the reversible hydrocolloid unit, the temperature for the tempering bath should be

Accepted Answer

A) 110° F (44° 
C) . 
B) 150° F (65.5° 
C) . 
C) 212° F (100° 
C) . 
A) 110° F (44° 
C) . 
B) 150° F (65.5° 
C) . 
C) 212° F (100° 
C) .

Question 15

An alginator is used in many dental procedures involving taking an alginate impression.

Accepted Answer

A) True 
 B)False

Question 16

In the reversible hydrocolloid unit, what should the temperature for the storage bath be?

Accepted Answer

A) 110° F (44° 
C)  
B) 150° F (65.5° 
C)  
C) 212° F (100° 
C)  
A) 110° F (44° 
C)  
B) 150° F (65.5° 
C)  
C) 212° F (100° 
C)

Flexible rubber bowls are used to mix which material(s)?

How should an impression be cared for once it is removed from the mouth?

Why do impression trays have perforations?

The automixer is used for which type of material?

What is the purpose of a vacuum mixing unit?

The use of a water-cooled tray describes which impression technique?

Which of the following materials would NOT be mixed in a flexible rubber bowl?

Which dental instrument is used to mix materials such as irreversible hydrocolloid and gypsum?

Bite registration trays come in a selection of right, left, and anterior.

When would one use a triple tray for impressions?

Which of the following statements is incorrect about the use of a model trimmer?

Which lab instrument is beneficial in separating an impression from the poured and set model?

The flexible alginate spatula does not require sterilization following use.

In the reversible hydrocolloid unit, the temperature for the tempering bath should be

An alginator is used in many dental procedures involving taking an alginate impression.

In the reversible hydrocolloid unit, what should the temperature for the storage bath be?

Basic Dental Instruments

Enamel Cutting Instruments

Local Anesthetic Syringecomponents and Nitrous Oxide Sedation

Evacuation Devices, Airwater Syringe Tip, and Dental Unit

Dental Handpieces

Burs and Rotary Attachments for Handpieces

Dental Dam Instruments

Amalgam Restorative Instruments

Composite Restorative Instruments

Crown and Bridge Restorative Instruments

Endodontic Instruments

Hygiene Instruments

Preventive and Sealant Instruments and Bleaching Trays

Orthodontic Instruments

Universal Surgical Instruments

Periodontal Instruments and Periodontal Surgical Instruments

Oral Surgery Extraction Instruments

Sterilization Equipment

Dental Imaging and Diagnostic Equipment

Vital Signs and Beyond

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Exam 19: Dental Materials Equipment

Flexible rubber bowls are used to mix which material(s)?

How should an impression be cared for once it is removed from the mouth?

Why do impression trays have perforations?

The automixer is used for which type of material?

What is the purpose of a vacuum mixing unit?

The use of a water-cooled tray describes which impression technique?

Which of the following materials would NOT be mixed in a flexible rubber bowl?

Which dental instrument is used to mix materials such as irreversible hydrocolloid and gypsum?

Bite registration trays come in a selection of right, left, and anterior.

When would one use a triple tray for impressions?

Which of the following statements is incorrect about the use of a model trimmer?

Which lab instrument is beneficial in separating an impression from the poured and set model?

The flexible alginate spatula does not require sterilization following use.

In the reversible hydrocolloid unit, the temperature for the tempering bath should be

An alginator is used in many dental procedures involving taking an alginate impression.

In the reversible hydrocolloid unit, what should the temperature for the storage bath be?

Basic Dental Instruments

Enamel Cutting Instruments

Local Anesthetic Syringecomponents and Nitrous Oxide Sedation

Evacuation Devices, Airwater Syringe Tip, and Dental Unit

Dental Handpieces

Burs and Rotary Attachments for Handpieces

Dental Dam Instruments

Amalgam Restorative Instruments

Composite Restorative Instruments

Crown and Bridge Restorative Instruments

Endodontic Instruments

Hygiene Instruments

Preventive and Sealant Instruments and Bleaching Trays

Orthodontic Instruments

Universal Surgical Instruments

Periodontal Instruments and Periodontal Surgical Instruments

Oral Surgery Extraction Instruments

Sterilization Equipment

Dental Imaging and Diagnostic Equipment

Vital Signs and Beyond

Filters