Question 1

For how many seconds should dentin be etched?

Accepted Answer

A)  10 
B)  20 
C)  40 
D)  60 
A)  10 
B)  20 
C)  40 
D)  60

Question 2

Which of the following is correct regarding the dual-cure process for resin bonding agents?

Accepted Answer

A)  Requires activation by light 
B)  Requires chemical curing rather than activation by light 
C)  Neither can be activated by light nor cures chemically 
D)  Can be activated by light or can cure chemically without application of the curing light 
A)  Requires activation by light 
B)  Requires chemical curing rather than activation by light 
C)  Neither can be activated by light nor cures chemically 
D)  Can be activated by light or can cure chemically without application of the curing light

Question 3

What are the three modes of curing for resin bonding agents?

Accepted Answer

•Self-cure: A process by which a chemica

Question 4

Etch gel is typically a/an _____ solution of phosphoric acid.

Accepted Answer

A)  5% 
B)  18% 
C)  24% 
D)  37% 
A)  5% 
B)  18% 
C)  24% 
D)  37%

Question 5

Match the items with the correct description below.
-Hydrophobic

Accepted Answer

A) An attribute that allows a material to tolerate the presence of moisture 
B) A bonding system that does not use a separate etching procedure with phosphoric acid 
C) A resin/dentin layer formed by the intermixing of the dentin bonding agent with collagen fibrils exposed by acid etching 
D) An attribute that does not allow a material to tolerate or perform well in the presence of moisture 
E) A bonding system that includes etching of both enamel and dentin as a separate step from the application of bonding agents 
A) An attribute that allows a material to tolerate the presence of moisture 
B) A bonding system that does not use a separate etching procedure with phosphoric acid 
C) A resin/dentin layer formed by the intermixing of the dentin bonding agent with collagen fibrils exposed by acid etching 
D) An attribute that does not allow a material to tolerate or perform well in the presence of moisture 
E) A bonding system that includes etching of both enamel and dentin as a separate step from the application of bonding agents

Question 6

Which of the following statements is true concerning bond strength?

Accepted Answer

A)  The bond strength to dentin is usually greater than to enamel. 
B)  Bonding to enamel usually achieves consistently high bond strengths of around 60 MPa (megapascals). 
C)  The dentin near the dentinoenamel junction (DEJ)has more dentinal tubules,and they are larger in diameter than in dentin closer to the pulp. 
D)  Wetter dentin with more holes is more difficult to bond to consistently than shallower dentin. 
A)  The bond strength to dentin is usually greater than to enamel. 
B)  Bonding to enamel usually achieves consistently high bond strengths of around 60 MPa (megapascals). 
C)  The dentin near the dentinoenamel junction (DEJ)has more dentinal tubules,and they are larger in diameter than in dentin closer to the pulp. 
D)  Wetter dentin with more holes is more difficult to bond to consistently than shallower dentin.

Question 7

The oxygen-inhibited layer is a very thin coating of uncured resin.Where is it found?

Accepted Answer

A)  Within the dentinal tubules 
B)  At the base of the polymerized bonding resin 
C)  On the surface of the polymerized bonding resin 
D)  Within intertubular and peritubular dentin,but not within dentinal tubules 
A)  Within the dentinal tubules 
B)  At the base of the polymerized bonding resin 
C)  On the surface of the polymerized bonding resin 
D)  Within intertubular and peritubular dentin,but not within dentinal tubules

Question 8

When would microleakage occur?

Accepted Answer

A)  When too much bond is used 
B)  When the tooth is overetched 
C)  When restorations are overcured 
D)  When contaminants are not removed 
A)  When too much bond is used 
B)  When the tooth is overetched 
C)  When restorations are overcured 
D)  When contaminants are not removed

Question 9

The clinical technique of post cementation involves thoroughly rinsing off the phosphoric acid used to etch the canal and removing excess water with a:

Accepted Answer

A)  paper point. 
B)  cotton pellet. 
C)  composite application brush. 
D)  3-cc syringe with a blunt-end cannula. 
A)  paper point. 
B)  cotton pellet. 
C)  composite application brush. 
D)  3-cc syringe with a blunt-end cannula.

Question 10

Which of the following correctly represents the sequence for tooth preparation before cementation of a post in an endodontically treated tooth?
1)Self-curing or dual-curing composite resin cement is applied to both the canal and the post.
2)A dentin primer is placed in the canal and air-dried to drive off any remaining water and the volatile solvents in the primer.
3)The prepared canal is etched with phosphoric acid,and then the acid is rinsed off.
4)Excess water is removed with a paper point.

Accepted Answer

A)  1,2,3,4 
B)  1,2,4,3 
C)  3,4,2,1 
D)  4,3,1,2 
A)  1,2,3,4 
B)  1,2,4,3 
C)  3,4,2,1 
D)  4,3,1,2

Question 11

Match the items with the correct description below.
-Hydrophilic

Accepted Answer

A) An attribute that allows a material to tolerate the presence of moisture 
B) A bonding system that does not use a separate etching procedure with phosphoric acid 
C) A resin/dentin layer formed by the intermixing of the dentin bonding agent with collagen fibrils exposed by acid etching 
D) An attribute that does not allow a material to tolerate or perform well in the presence of moisture 
E) A bonding system that includes etching of both enamel and dentin as a separate step from the application of bonding agents 
A) An attribute that allows a material to tolerate the presence of moisture 
B) A bonding system that does not use a separate etching procedure with phosphoric acid 
C) A resin/dentin layer formed by the intermixing of the dentin bonding agent with collagen fibrils exposed by acid etching 
D) An attribute that does not allow a material to tolerate or perform well in the presence of moisture 
E) A bonding system that includes etching of both enamel and dentin as a separate step from the application of bonding agents

Question 12

Which of the following statements is true for bonding orthodontic brackets?

Accepted Answer

A)  Orthodontic brackets have replaced bands for many uses,especially in the posterior part of the mouth. 
B)  Because brackets cannot be used with conventional cements,they must be bonded to the enamel using adhesive materials. 
C)  Only self-cured adhesive bonding resins can be used for bonding orthodontic brackets. 
D)  Orthodontic brackets must be directly bonded;there is no indirect method of application of brackets. 
A)  Orthodontic brackets have replaced bands for many uses,especially in the posterior part of the mouth. 
B)  Because brackets cannot be used with conventional cements,they must be bonded to the enamel using adhesive materials. 
C)  Only self-cured adhesive bonding resins can be used for bonding orthodontic brackets. 
D)  Orthodontic brackets must be directly bonded;there is no indirect method of application of brackets.

Question 13

Hypersensitivity may occur when _____ are irritated by procedures or chemicals associated with composite resin restorations.

Accepted Answer

A)  ameloblasts 
B)  osteoblasts 
C)  odontoblasts 
A)  ameloblasts 
B)  osteoblasts 
C)  odontoblasts

Question 14

When a composite resin is polymerized,a small layer of uncured material will remain.What is this called?

Accepted Answer

A)  Smear layer 
B)  Hybrid layer 
C)  Hydrophobic 
D)  Oxygen-inhibited layer 
A)  Smear layer 
B)  Hybrid layer 
C)  Hydrophobic 
D)  Oxygen-inhibited layer

For how many seconds should dentin be etched?

Which of the following is correct regarding the dual-cure process for resin bonding agents?

What are the three modes of curing for resin bonding agents?

Etch gel is typically a/an _____ solution of phosphoric acid.

Match the items with the correct description below. -Hydrophobic

Which of the following statements is true concerning bond strength?

The oxygen-inhibited layer is a very thin coating of uncured resin.Where is it found?

When would microleakage occur?

The clinical technique of post cementation involves thoroughly rinsing off the phosphoric acid used to etch the canal and removing excess water with a:

Match the items with the correct description below. -Hydrophilic

Which of the following statements is true for bonding orthodontic brackets?

Hypersensitivity may occur when _____ are irritated by procedures or chemicals associated with composite resin restorations.

When a composite resin is polymerized,a small layer of uncured material will remain.What is this called?

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

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

Dental Cement

Impression Materials

Gypsum and Wax Products

Polymers for Prosthetic Dentistry

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters

Exam 5: Principles of Bonding

For how many seconds should dentin be etched?

Which of the following is correct regarding the dual-cure process for resin bonding agents?

What are the three modes of curing for resin bonding agents?

Etch gel is typically a/an _____ solution of phosphoric acid.

Match the items with the correct description below. -Hydrophobic

Which of the following statements is true concerning bond strength?

The oxygen-inhibited layer is a very thin coating of uncured resin.Where is it found?

When would microleakage occur?

The clinical technique of post cementation involves thoroughly rinsing off the phosphoric acid used to etch the canal and removing excess water with a:

Match the items with the correct description below. -Hydrophilic

Which of the following statements is true for bonding orthodontic brackets?

Hypersensitivity may occur when _____ are irritated by procedures or chemicals associated with composite resin restorations.

When a composite resin is polymerized,a small layer of uncured material will remain.What is this called?

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

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

Dental Cement

Impression Materials

Gypsum and Wax Products

Polymers for Prosthetic Dentistry

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters