Question 1

The bottom side of the Tofflemire™ matrix retainer is directed to which of the following?

Accepted Answer

A)  gingival tissue 
B)  occlusal surface 
C)  diagonal slot on the vise 
D)  both a and c 
A)  gingival tissue 
B)  occlusal surface 
C)  diagonal slot on the vise 
D)  both a and c

Question 2

The __________ is the part of the Tofflemire retainer that is used to adjust the size of the band.

Accepted Answer

A)  outer knob 
B)  spindle 
C)  inner knob 
D)  guide channels 
A)  outer knob 
B)  spindle 
C)  inner knob 
D)  guide channels

Question 3

The wedges are usually placed from the facial when used on posterior teeth.

Accepted Answer

A) True 
 B)False

Question 4

A common organic polymer matrix contained in composite is ____________.

Accepted Answer

A)  quartz 
B)  barium 
C)  silica 
D)  BIS-GMA 
A)  quartz 
B)  barium 
C)  silica 
D)  BIS-GMA

Question 5

Compomers are a cross between composites and glass ionomers in characteristics and properties.

Accepted Answer

A) True 
 B)False

Question 6

The excess material escaping between the tooth and the matrix band is called the ____________.

Accepted Answer

A)  overhang 
B)  margin 
C)  floor 
D)  none of the above 
A)  overhang 
B)  margin 
C)  floor 
D)  none of the above

Question 7

__________ wedges are used with the light-curing restorations matrix to deflect light.

Accepted Answer

A)  wooden 
B)  transparent 
A)  wooden 
B)  transparent

Question 8

Moving the inner knob will increase or decrease the size of the loop to match the diameter of the tooth.

Accepted Answer

A) True 
 B)False

Question 9

Place the steps of an amalgam procedure in order.
1) Cavity prep
2) Place cavity liner
3) Place amalgam
4) Carve amalgam
5) Check occlusion

Accepted Answer

A)  1, 2, 3, 4, 5 
B)  3, 2, 4, 5, 1 
C)  2, 3, 5, 4, 1 
D)  1, 3, 2, 4, 5 
A)  1, 2, 3, 4, 5 
B)  3, 2, 4, 5, 1 
C)  2, 3, 5, 4, 1 
D)  1, 3, 2, 4, 5

Question 10

Wedges are used ____________.

Accepted Answer

A)  any time a matrix is used 
B)  only when the preparation involves a proximal surface 
C)  only when the preparation involves a large missing tooth wall 
D)  only when there is quite a bit of bleeding 
A)  any time a matrix is used 
B)  only when the preparation involves a proximal surface 
C)  only when the preparation involves a large missing tooth wall 
D)  only when there is quite a bit of bleeding

Question 11

The matrix serves to ____________.

Accepted Answer

A)  replace missing tooth surfaces 
B)  restore natural contours of the tooth 
C)  contain the restorative material 
D)  all of the above 
A)  replace missing tooth surfaces 
B)  restore natural contours of the tooth 
C)  contain the restorative material 
D)  all of the above

Question 12

A plastic strip matrix is ____________.

Accepted Answer

A)  made of nylon or celluloid 
B)  used for composite or glass ionomer restorations 
C)  transparent 
D)  all of the above 
A)  made of nylon or celluloid 
B)  used for composite or glass ionomer restorations 
C)  transparent 
D)  all of the above

Exam 38: Restorative Materials Matrix and Wedge

The bottom side of the Tofflemire™ matrix retainer is directed to which of the following?

The __________ is the part of the Tofflemire retainer that is used to adjust the size of the band.

The wedges are usually placed from the facial when used on posterior teeth.

A common organic polymer matrix contained in composite is ____________.

Compomers are a cross between composites and glass ionomers in characteristics and properties.

The excess material escaping between the tooth and the matrix band is called the ____________.

__________ wedges are used with the light-curing restorations matrix to deflect light.

Moving the inner knob will increase or decrease the size of the loop to match the diameter of the tooth.

Place the steps of an amalgam procedure in order. 1) Cavity prep 2) Place cavity liner 3) Place amalgam 4) Carve amalgam 5) Check occlusion

Wedges are used ____________.

The matrix serves to ____________.

A plastic strip matrix is ____________.

Introduction to the Dental Profession

Psychology Communication and Multicultural Interaction

Ethics Jurisprudence and the Health Information Portability and Accountability Act

Oral Health and Preventative Techniques

Nutrition

General Anatomy and Physiology

Head and Neck Anatomy

Embryology and Histology

Tooth Morphology

Microbiology

Infection Control

Management of Hazardous Materials

Preparation for Patient Care

Dental Charting

Pharmacology

Emergency Management

Introduction to the Dental Office and Basic Chairside Assisting

Basic Chairside Instruments and Tray Systems

Instrument Transfer and Maintaining the Operating Field

Anesthesia and Sedation

Introduction to Dental Radiography and Equipment

Production and Evaluation of Dental Radiographs

Extraoral and Digital Radiography

Endodontics

Oral and Maxillofacial Surgery

Dental Implants

Oral Pathology

Orthodontics

Pediatric Dentistry

Dental Sealants

Periodontics

Coronal Polish

Fixed Prosthodontics and Gingival Retraction

Computerized Impression and Restorative Systems

Cosmetic Dentistry and Whitening

Removable Prosthodontics

Dental Cements Bases Liners and Bonding Agents

Laboratory Materials and Techniques

Dental Office Management

Employment Strategies

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