Question 1

Try-in paste is used to:

Accepted Answer

A)  tack the restoration in place to check the shade of the final product. 
B)  bond orthodontic brackets. 
C)  verify proper seating of crowns. 
D)  cement posts before restorative treatment. 
A)  tack the restoration in place to check the shade of the final product. 
B)  bond orthodontic brackets. 
C)  verify proper seating of crowns. 
D)  cement posts before restorative treatment.

Question 2

What must be done to lower the setting time of certain cements?

Accepted Answer

A)  Add more catalyst. 
B)  Lower the slab temperature. 
C)  Increase the slab temperature. 
D)  Setting times should not be altered. 
A)  Add more catalyst. 
B)  Lower the slab temperature. 
C)  Increase the slab temperature. 
D)  Setting times should not be altered.

Question 3

A major concern regarding many cements is their pH.What is the reason for this concern?

Accepted Answer

A)  Acids in the mixture 
B)  Chemical reactions 
C)  Preservatives 
D)  None of the above 
A)  Acids in the mixture 
B)  Chemical reactions 
C)  Preservatives 
D)  None of the above

Question 4

What is an advantage of a resin-based cement?

Accepted Answer

A)  Is water soluble 
B)  Bonds with dentin 
C)  Has a high viscosity 
D)  Won't cause sensitivity 
A)  Is water soluble 
B)  Bonds with dentin 
C)  Has a high viscosity 
D)  Won't cause sensitivity

Question 5

Which of the following would not be used as pulpal protection under a restoration?

Accepted Answer

A)  Varnish 
B)  Resin cement 
C)  Low-strength liner 
D)  High-strength base 
A)  Varnish 
B)  Resin cement 
C)  Low-strength liner 
D)  High-strength base

Question 6

Why are high-strength bases placed in a thickness of 0.75 mm or greater?

Accepted Answer

A)  Are identifiable on dental radiographs 
B)  Stimulate the formation of reparative dentin 
C)  Will not crack or shrink during setting 
D)  Provide protection from the thermal conduction of metal restorations 
A)  Are identifiable on dental radiographs 
B)  Stimulate the formation of reparative dentin 
C)  Will not crack or shrink during setting 
D)  Provide protection from the thermal conduction of metal restorations

Question 7

What are glass ionomer cements used for?

Accepted Answer

A)  Liner 
B)  Base 
C)  Restoration 
D)  All of the above 
A)  Liner 
B)  Base 
C)  Restoration 
D)  All of the above

Question 8

The addition of powder to dental cement to create a secondary consistency increases the ______ of the cement.
1)viscosity
2)solubility
3)strength

Accepted Answer

A)  1,2,3 
B)  1,2 
C)  1,3 
D)  2 
A)  1,2,3 
B)  1,2 
C)  1,3 
D)  2

Question 9

Which of the following cements is used as a direct pulp-capping agent when very small exposures of the pulp are suspected?

Accepted Answer

A)  Cavity varnish 
B)  Zinc phosphate 
C)  Calcium hydroxide 
D)  Zinc oxide eugenol 
A)  Cavity varnish 
B)  Zinc phosphate 
C)  Calcium hydroxide 
D)  Zinc oxide eugenol

Question 10

When cement is mixed to deliver a permanent crown,the mixture should be mixed:

Accepted Answer

A)  to a firm ball stage. 
B)  very thin and runny. 
C)  sticky but not too dry. 
D)  to a luting consistency. 
A)  to a firm ball stage. 
B)  very thin and runny. 
C)  sticky but not too dry. 
D)  to a luting consistency.

Question 11

The margins of indirect restorations using ______ cements should be coated with a coating agent or varnish to protect them from moisture during the setting time.

Accepted Answer

A)  glass ionomer 
B)  zinc phosphate 
C)  zinc oxide eugenol 
D)  zinc polycarboxylate 
A)  glass ionomer 
B)  zinc phosphate 
C)  zinc oxide eugenol 
D)  zinc polycarboxylate

Question 12

Which of the following statements is true concerning the acidity of zinc phosphate cement?

Accepted Answer

A)  Zinc phosphate cement has a high acidity throughout the time of service. 
B)  Zinc phosphate cement is incompatible with dentin bonding systems. 
C)  Pulpal protection is not recommended in deep cavity preparations when zinc phosphate cement is used,as the low acidity soothes the pulp. 
D)  The acidity of zinc phosphate cement is initially low but becomes neutral within 24 to 28 hours. 
A)  Zinc phosphate cement has a high acidity throughout the time of service. 
B)  Zinc phosphate cement is incompatible with dentin bonding systems. 
C)  Pulpal protection is not recommended in deep cavity preparations when zinc phosphate cement is used,as the low acidity soothes the pulp. 
D)  The acidity of zinc phosphate cement is initially low but becomes neutral within 24 to 28 hours.

Question 13

Which of the following would not be a reason to place a high-strength base?

Accepted Answer

A)  Promote reparative dentin 
B)  Decrease thermal sensitivity 
C)  Increase mechanical support 
D)  It's condensable 
A)  Promote reparative dentin 
B)  Decrease thermal sensitivity 
C)  Increase mechanical support 
D)  It's condensable

Question 14

When would a cement be mixed to a secondary consistency?

Accepted Answer

A)  Cement a veneer 
B)  Cement a permanent crown 
C)  Cement an orthodontic band 
D)  Cement an intermediate restoration 
A)  Cement a veneer 
B)  Cement a permanent crown 
C)  Cement an orthodontic band 
D)  Cement an intermediate restoration

Question 15

By placing a ______ provisional restoration,the dentist is able to evaluate the response of the pulp before the reappointment for a permanent restoration.

Accepted Answer

A)  varnish 
B)  luting 
C)  buildup 
D)  sedative 
A)  varnish 
B)  luting 
C)  buildup 
D)  sedative

Question 16

Match the items with the correct description below.
-Base/High-strength base

Accepted Answer

A) A thin layer of material placed to protect the tooth from the components of dental materials and microleakage,stimulate reparative dentin,or act as a pulp capping 
B) A thin layer placed on the floor and walls of the preparation to seal tubules and minimize microleakage 
C) A thick layer of cement used to protect the tooth from chemical and thermal irritation 
D) Thick,putty-like,condensable material that can be rolled into a ball or rope,suitable for use as a base 
E) Less viscous,flows easily,can be drawn to a 1-inch string with a spatula,suitable for luting 
A) A thin layer of material placed to protect the tooth from the components of dental materials and microleakage,stimulate reparative dentin,or act as a pulp capping 
B) A thin layer placed on the floor and walls of the preparation to seal tubules and minimize microleakage 
C) A thick layer of cement used to protect the tooth from chemical and thermal irritation 
D) Thick,putty-like,condensable material that can be rolled into a ball or rope,suitable for use as a base 
E) Less viscous,flows easily,can be drawn to a 1-inch string with a spatula,suitable for luting

Try-in paste is used to:

What must be done to lower the setting time of certain cements?

A major concern regarding many cements is their pH.What is the reason for this concern?

What is an advantage of a resin-based cement?

Which of the following would not be used as pulpal protection under a restoration?

Why are high-strength bases placed in a thickness of 0.75 mm or greater?

What are glass ionomer cements used for?

The addition of powder to dental cement to create a secondary consistency increases the ______ of the cement. 1)viscosity 2)solubility 3)strength

Which of the following cements is used as a direct pulp-capping agent when very small exposures of the pulp are suspected?

When cement is mixed to deliver a permanent crown,the mixture should be mixed:

The margins of indirect restorations using ______ cements should be coated with a coating agent or varnish to protect them from moisture during the setting time.

Which of the following statements is true concerning the acidity of zinc phosphate cement?

Which of the following would not be a reason to place a high-strength base?

When would a cement be mixed to a secondary consistency?

By placing a ______ provisional restoration,the dentist is able to evaluate the response of the pulp before the reappointment for a permanent restoration.

Match the items with the correct description below. -Base/High-strength base

Introduction to Dental Materials

Oral Environment and Patient Considerations

Physical and Mechanical Properties of Dental Materials

General Handling and Safety of Dental Materials in the Dental Office

Principles of Bonding

Composites, glass Ionomers, and Compomers

Preventive and Desensitizing Materials

Teeth Whitening Materials and Procedures

Dental Ceramics

Dental Amalgam

Casting Metals, solders, and Wrought Metal Alloys

Dental Implants

Abrasion, finishing, and Polishing

Impression Materials

Gypsum and Wax Products

Polymers for Prosthetic Dentistry

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters

Exam 14: Dental Cement

Try-in paste is used to:

What must be done to lower the setting time of certain cements?

A major concern regarding many cements is their pH.What is the reason for this concern?

What is an advantage of a resin-based cement?

Which of the following would not be used as pulpal protection under a restoration?

Why are high-strength bases placed in a thickness of 0.75 mm or greater?

What are glass ionomer cements used for?

The addition of powder to dental cement to create a secondary consistency increases the ______ of the cement. 1)viscosity 2)solubility 3)strength

Which of the following cements is used as a direct pulp-capping agent when very small exposures of the pulp are suspected?

When cement is mixed to deliver a permanent crown,the mixture should be mixed:

The margins of indirect restorations using ______ cements should be coated with a coating agent or varnish to protect them from moisture during the setting time.

Which of the following statements is true concerning the acidity of zinc phosphate cement?

Which of the following would not be a reason to place a high-strength base?

When would a cement be mixed to a secondary consistency?

By placing a ______ provisional restoration,the dentist is able to evaluate the response of the pulp before the reappointment for a permanent restoration.

Match the items with the correct description below. -Base/High-strength base

Introduction to Dental Materials

Oral Environment and Patient Considerations

Physical and Mechanical Properties of Dental Materials

General Handling and Safety of Dental Materials in the Dental Office

Principles of Bonding

Composites, glass Ionomers, and Compomers

Preventive and Desensitizing Materials

Teeth Whitening Materials and Procedures

Dental Ceramics

Dental Amalgam

Casting Metals, solders, and Wrought Metal Alloys

Dental Implants

Abrasion, finishing, and Polishing

Impression Materials

Gypsum and Wax Products

Polymers for Prosthetic Dentistry

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters