Question 1

Match the items with the correct description below.
-Polymer

Accepted Answer

A) A long-chain,high-molecular-weight molecule produced by the linking of many low-molecular-weight monomer molecules 
B) A polymer composed of numerous methyl methacrylate monomers linked together in a long chain 
C) The joining of adjacent long-chain polymers by bonding of short chains along their sides 
D) The act of forming polymers.The process can be activated by chemicals,heat,or light. 
E) Low-molecular-weight molecules that are joined to form polymers 
A) A long-chain,high-molecular-weight molecule produced by the linking of many low-molecular-weight monomer molecules 
B) A polymer composed of numerous methyl methacrylate monomers linked together in a long chain 
C) The joining of adjacent long-chain polymers by bonding of short chains along their sides 
D) The act of forming polymers.The process can be activated by chemicals,heat,or light. 
E) Low-molecular-weight molecules that are joined to form polymers A

Question 2

Match the items with the correct description below.
-Polymerization

Accepted Answer

A) A long-chain,high-molecular-weight molecule produced by the linking of many low-molecular-weight monomer molecules 
B) A polymer composed of numerous methyl methacrylate monomers linked together in a long chain 
C) The joining of adjacent long-chain polymers by bonding of short chains along their sides 
D) The act of forming polymers.The process can be activated by chemicals,heat,or light. 
E) Low-molecular-weight molecules that are joined to form polymers 
A) A long-chain,high-molecular-weight molecule produced by the linking of many low-molecular-weight monomer molecules 
B) A polymer composed of numerous methyl methacrylate monomers linked together in a long chain 
C) The joining of adjacent long-chain polymers by bonding of short chains along their sides 
D) The act of forming polymers.The process can be activated by chemicals,heat,or light. 
E) Low-molecular-weight molecules that are joined to form polymers D

Question 3

What is the result of the loss of monomer or inadequate pressure during processing?

Accepted Answer

A)  A brittle material 
B)  Shrinkage of the material 
C)  Porosities in the material 
D)  Discoloration of the material 
A)  A brittle material 
B)  Shrinkage of the material 
C)  Porosities in the material 
D)  Discoloration of the material C

Question 4

Which of the following is true of plastic (acrylic)and porcelain denture teeth?

Accepted Answer

A)  Porcelain teeth are used more often than plastic teeth. 
B)  Porcelain denture teeth chemically bond to the acrylic base of the denture. 
C)  Plastic denture teeth do not wear the opposing natural or artificial teeth or restorations. 
D)  It is easier to grind porcelain denture teeth rather than acrylic denture teeth to adjust the occlusion or to reshape a tooth to fit the available space. 
A)  Porcelain teeth are used more often than plastic teeth. 
B)  Porcelain denture teeth chemically bond to the acrylic base of the denture. 
C)  Plastic denture teeth do not wear the opposing natural or artificial teeth or restorations. 
D)  It is easier to grind porcelain denture teeth rather than acrylic denture teeth to adjust the occlusion or to reshape a tooth to fit the available space.

Question 5

Describe the process of addition polymerization.

Accepted Answer

The free radical initiates the reaction

Question 6

A specialized aspect of a/an _____ practice may include the fabrication of maxillofacial prostheses to replace facial tissues lost as the result of trauma,disease,surgery,or birth defect.

Accepted Answer

A)  prosthodontic 
B)  periodontic 
C)  endodontic 
D)  orthodontic 
A)  prosthodontic 
B)  periodontic 
C)  endodontic 
D)  orthodontic

Question 7

What is the polymerized acrylic resin formed when a liquid monomer is mixed with a powder of small polymer beads?

Accepted Answer

A)  BIS-GMA 
B)  Benzoyl peroxide 
C)  Poly (ethyl methacrylate) 
D)  Poly (methyl methacrylate) 
A)  BIS-GMA 
B)  Benzoyl peroxide 
C)  Poly (ethyl methacrylate) 
D)  Poly (methyl methacrylate)

Question 8

In general,the chemical-cured acrylic resins are _____ than heat-cured acrylic resins.
1)stronger
2)harder
3)more porous
4)less color stable

Accepted Answer

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

Question 9

Sources of dimensional change for polymeric materials include which of the following?

Accepted Answer

A)  Coefficient of thermal expansion 
B)  Accelerators and inhibitors 
C)  Thermal conductivity 
D)  Water sorption 
A)  Coefficient of thermal expansion 
B)  Accelerators and inhibitors 
C)  Thermal conductivity 
D)  Water sorption

Question 10

When the acrylic powder and liquid are mixed,the chemical- and heat-cured materials go through a similar reaction,except that chemical-cured materials have a _____ in the liquid as an activator,whereas heat-cured materials do not.

Accepted Answer

A)  benzoyl peroxide 
B)  hydroquinone 
C)  glycol dimethacrylate 
D)  tertiary amine 
A)  benzoyl peroxide 
B)  hydroquinone 
C)  glycol dimethacrylate 
D)  tertiary amine

Question 11

During processing of a denture base,heat-cured acrylic resin in the _____ stage is placed in the space created by removal of the wax and record base.

Accepted Answer

A)  sandy 
B)  sticky 
C)  dough 
D)  rubber 
A)  sandy 
B)  sticky 
C)  dough 
D)  rubber

Question 12

In an addition polymerization reaction,the free radical initiates what reaction?

Accepted Answer

A)  Opening the bond between the two carbon atoms of the monomer 
B)  Reversing the polarity of the monomer chain 
C)  Creating a bend in the carbon atom 
D)  Excluding divalent cations 
A)  Opening the bond between the two carbon atoms of the monomer 
B)  Reversing the polarity of the monomer chain 
C)  Creating a bend in the carbon atom 
D)  Excluding divalent cations

Question 13

Which of the following does not apply to porcelain denture teeth?

Accepted Answer

A)  They are hard. 
B)  They are esthetic. 
C)  They are easily repaired. 
D)  They are stain resistant. 
A)  They are hard. 
B)  They are esthetic. 
C)  They are easily repaired. 
D)  They are stain resistant.

Question 14

Polymerization of chemical-cured acrylic resins is set into action when the tertiary amine in the liquid activates the _____ in the powder to produce free radicals.

Accepted Answer

A)  plasticizers 
B)  hydroquinone 
C)  benzoyl peroxide 
D)  glycol dimethacrylate 
A)  plasticizers 
B)  hydroquinone 
C)  benzoyl peroxide 
D)  glycol dimethacrylate

Question 15

Polymerization shrinkage is seen most readily in which of the following areas of a heat-cured acrylic resin denture?

Accepted Answer

A)  Labial flange 
B)  Alveolar ridge 
C)  Palatal 
D)  Hamular notch 
A)  Labial flange 
B)  Alveolar ridge 
C)  Palatal 
D)  Hamular notch

Question 16

Which of the following is true of the chairside reline?

Accepted Answer

A)  It utilizes an indirect technique in which an impression of the tissues is made inside the existing denture and a cast is made from this impression. 
B)  The reline material is applied to the primed denture base,and the denture is reseated in the patient's mouth for border molding. 
C)  An indexing instrument is used to establish the relationship between the cast and the denture. 
D)  The lining material is heat- and pressure-processed in the denture base. 
A)  It utilizes an indirect technique in which an impression of the tissues is made inside the existing denture and a cast is made from this impression. 
B)  The reline material is applied to the primed denture base,and the denture is reseated in the patient's mouth for border molding. 
C)  An indexing instrument is used to establish the relationship between the cast and the denture. 
D)  The lining material is heat- and pressure-processed in the denture base.

Question 17

Which of the following is true of in-office care of a complete denture?

Accepted Answer

A)  Patients will not form calculus on a denture. 
B)  Tissue-bearing surfaces of the complete denture should be polished during cleaning. 
C)  It is helpful for the patient if teeth and the acrylic base are worn down during the polishing process. 
D)  Calculus can be removed by placing the prosthesis in a denture cleaning solution inside a zippered bag placed in an ultrasonic cleaner. 
A)  Patients will not form calculus on a denture. 
B)  Tissue-bearing surfaces of the complete denture should be polished during cleaning. 
C)  It is helpful for the patient if teeth and the acrylic base are worn down during the polishing process. 
D)  Calculus can be removed by placing the prosthesis in a denture cleaning solution inside a zippered bag placed in an ultrasonic cleaner.

Question 18

Describe how a denture is fabricated using heat-cured resin.

Accepted Answer

The technician places the cast of the ed

Question 19

Match the items with the correct description below.
-Monomer

Accepted Answer

A) A long-chain,high-molecular-weight molecule produced by the linking of many low-molecular-weight monomer molecules 
B) A polymer composed of numerous methyl methacrylate monomers linked together in a long chain 
C) The joining of adjacent long-chain polymers by bonding of short chains along their sides 
D) The act of forming polymers.The process can be activated by chemicals,heat,or light. 
E) Low-molecular-weight molecules that are joined to form polymers 
A) A long-chain,high-molecular-weight molecule produced by the linking of many low-molecular-weight monomer molecules 
B) A polymer composed of numerous methyl methacrylate monomers linked together in a long chain 
C) The joining of adjacent long-chain polymers by bonding of short chains along their sides 
D) The act of forming polymers.The process can be activated by chemicals,heat,or light. 
E) Low-molecular-weight molecules that are joined to form polymers

Question 20

Why must dentures be relined periodically?

Accepted Answer

A)  Dentures absorb odors from plaque and food. 
B)  Dimensional changes in acrylic occur. 
C)  Alveolar ridges shrink over time. 
A)  Dentures absorb odors from plaque and food. 
B)  Dimensional changes in acrylic occur. 
C)  Alveolar ridges shrink over time.

Match the items with the correct description below. -Polymer

Match the items with the correct description below. -Polymerization

What is the result of the loss of monomer or inadequate pressure during processing?

Which of the following is true of plastic (acrylic)and porcelain denture teeth?

Describe the process of addition polymerization.

A specialized aspect of a/an _____ practice may include the fabrication of maxillofacial prostheses to replace facial tissues lost as the result of trauma,disease,surgery,or birth defect.

What is the polymerized acrylic resin formed when a liquid monomer is mixed with a powder of small polymer beads?

In general,the chemical-cured acrylic resins are _____ than heat-cured acrylic resins. 1)stronger 2)harder 3)more porous 4)less color stable

Sources of dimensional change for polymeric materials include which of the following?

When the acrylic powder and liquid are mixed,the chemical- and heat-cured materials go through a similar reaction,except that chemical-cured materials have a _____ in the liquid as an activator,whereas heat-cured materials do not.

During processing of a denture base,heat-cured acrylic resin in the _____ stage is placed in the space created by removal of the wax and record base.

In an addition polymerization reaction,the free radical initiates what reaction?

Which of the following does not apply to porcelain denture teeth?

Polymerization of chemical-cured acrylic resins is set into action when the tertiary amine in the liquid activates the _____ in the powder to produce free radicals.

Polymerization shrinkage is seen most readily in which of the following areas of a heat-cured acrylic resin denture?

Which of the following is true of the chairside reline?

Which of the following is true of in-office care of a complete denture?

Describe how a denture is fabricated using heat-cured resin.

Match the items with the correct description below. -Monomer

Why must dentures be relined periodically?

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

Dental Cement

Impression Materials

Gypsum and Wax Products

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters

Exam 17: Polymers for Prosthetic Dentistry

Match the items with the correct description below. -Polymer

Match the items with the correct description below. -Polymerization

What is the result of the loss of monomer or inadequate pressure during processing?

Which of the following is true of plastic (acrylic)and porcelain denture teeth?

Describe the process of addition polymerization.

A specialized aspect of a/an _____ practice may include the fabrication of maxillofacial prostheses to replace facial tissues lost as the result of trauma,disease,surgery,or birth defect.

What is the polymerized acrylic resin formed when a liquid monomer is mixed with a powder of small polymer beads?

In general,the chemical-cured acrylic resins are _____ than heat-cured acrylic resins. 1)stronger 2)harder 3)more porous 4)less color stable

Sources of dimensional change for polymeric materials include which of the following?

When the acrylic powder and liquid are mixed,the chemical- and heat-cured materials go through a similar reaction,except that chemical-cured materials have a _____ in the liquid as an activator,whereas heat-cured materials do not.

During processing of a denture base,heat-cured acrylic resin in the _____ stage is placed in the space created by removal of the wax and record base.

In an addition polymerization reaction,the free radical initiates what reaction?

Which of the following does not apply to porcelain denture teeth?

Polymerization of chemical-cured acrylic resins is set into action when the tertiary amine in the liquid activates the _____ in the powder to produce free radicals.

Polymerization shrinkage is seen most readily in which of the following areas of a heat-cured acrylic resin denture?

Which of the following is true of the chairside reline?

Which of the following is true of in-office care of a complete denture?

Describe how a denture is fabricated using heat-cured resin.

Match the items with the correct description below. -Monomer

Why must dentures be relined periodically?

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

Dental Cement

Impression Materials

Gypsum and Wax Products

Provisional Restorations

Preventive and Corrective Oral Appliances

Filters