Question 1

Each of the following is a characteristic of contact areas EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   Stabilize teeth
B)   Discourage food impaction
C)   Are located in middle third of tooth
D)   Protect interdental papilla
E)   All of the above are true. C

Question 2

Contact point and contact area are synonymous terms; that is, they mean the same thing.

Accepted Answer

A) True 
 B)False  False

Question 3

Each of the following can be damaged by an overhanging restoration EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   Contact point
B)   Marginal gingiva
C)   Plaque retention
D)   Alveolar bone
E)   Contact area A

Question 4

A molar with little or no curvature on the buccal surface would result in

Accepted Answer

A)   Open contact area
B)   Overstimulation of gingiva
C)   Inadequate stimulation of gingiva
D)   Difficult oral hygiene access

Question 5

Which illustration in depicts an overcontoured restoration?

Accepted Answer

A)   
B)   
C)

Question 6

Each of the following is a function of embrasures EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   Provide self-cleansing from the contact area.
B)   Reduce occlusal trauma.
C)   Discourage food impaction.
D)   Prevent gingival stimulation.

Question 7

Height of contour is the same as

Accepted Answer

A)   Embrasure
B)   Crest of curvature
C)   Alignment
D)   Proximal contact
E)   Width of tooth

Question 8

The facial crest of curvature for all teeth is located at the cervical third.

Accepted Answer

A) True 
 B)False

Question 9

Each of the following statements is true of the curvature of the CEJ EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   The curvature of the cervical line, or CEJ, depends on the height of the contact area.
B)   The curvature of the cervical line, or CEJ, depends on the diameter of the crown.
C)   The mandibular anterior teeth show the greatest amount of curvature of the cervical line.
D)   The more anterior the tooth, the greater is the curvature of the cervical line.

Question 10

Embrasures are spillways between the teeth that allow food to be shunted away from contact areas. While effective embrasures are self-cleaning, poorly contoured embrasures lead to gingival irritation and breakdown.

Accepted Answer

A)   Both statements are true.
B)   The first statement is true; the second is false.
C)   The first statement is false; the second is true.
D)   Both statements are false.

Question 11

Posterior teeth have contact areas slightly buccal to the center of the teeth. Lingual embrasures of posterior teeth are wider than buccal embrasures.

Accepted Answer

A)   Both statements are true.
B)   The first statement is true; the second is false.
C)   The first statement is false; the second is true.
D)   Both statements are false.

Question 12

The curvature of the CEJ is generally greater on the mesial surfaces.

Accepted Answer

A) True 
 B)False

Question 13

An oral examination of Mrs. Connors, a new patient, reveals numerous restorations and two porcelain crowns. Mrs. Connors has been concerned about two maxillary molars where floss shreds or breaks. She also mentions that her gums "always hurt around my big crown." The painful gingiva surrounding her overcontoured crown is caused by

Accepted Answer

A)   Inadequate stimulation of gingiva
B)   Gingival recession
C)   Periodontal disease
D)   Food impaction

Question 14

Match between columns
                        Premises: Contact point
Interproximal space
Spillway
Height of contour
CEJ

Accepted Answer

The Answer of Cervical line and Embrasure and Interdental space is...

Question 15

An oral examination of Mrs. Connors, a new patient, reveals numerous restorations and two porcelain crowns. Mrs. Connors has been concerned about two maxillary molars where floss shreds or breaks. She also mentions that her gums "always hurt around my big crown." The MOST likely cause for Mrs. Connors's difficulty in flossing is

Accepted Answer

A)   Rough enamel
B)   Rough cementum
C)   An overhanging restoration
D)   Improper flossing technique

Question 16

Each of the following is part of the periodontium EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   Enamel
B)   Cementum
C)   Free gingiva
D)   Alveolar mucosa
E)   Alveolar bone

Question 17

What are the arrows pointing to in the illustration below?

Accepted Answer

A)   Contact areas
B)   Height of curvature
C)   Buccal contour
D)   Excess curvature
E)   None of the above

Question 18

Deep pits and fissures on the occlusal surface

Accepted Answer

A)   Serve as spillways
B)   Help to grind and pulverize food
C)   Promote plaque retention
D)   Allow for interdigitation during chewing
E)   All of the above are true.

Question 19

Interproximal spaces lie between the teeth and the bone on one side and the proximal surfaces and their contact area on the other side. Interproximal spaces are U-shaped in posterior regions and more rounded in anterior regions.

Accepted Answer

A)   Both statements are true.
B)   The first statement is true; the second statement is false.
C)   The first statement is false; the second statement is true.
D)   Both statements are false.

Question 20

An overhanging restoration extends above the occlusal surface and prevents normal occlusal contact between the arches.

Accepted Answer

A) True 
 B)False

Exam 3: Fundamental and Preventive Curvatures

Each of the following is a characteristic of contact areas EXCEPT one. Which one is the EXCEPTION?

Contact point and contact area are synonymous terms; that is, they mean the same thing.

Each of the following can be damaged by an overhanging restoration EXCEPT one. Which one is the EXCEPTION?

A molar with little or no curvature on the buccal surface would result in

Which illustration in depicts an overcontoured restoration?

Each of the following is a function of embrasures EXCEPT one. Which one is the EXCEPTION?

Height of contour is the same as

The facial crest of curvature for all teeth is located at the cervical third.

Each of the following statements is true of the curvature of the CEJ EXCEPT one. Which one is the EXCEPTION?

Embrasures are spillways between the teeth that allow food to be shunted away from contact areas. While effective embrasures are self-cleaning, poorly contoured embrasures lead to gingival irritation and breakdown.

Posterior teeth have contact areas slightly buccal to the center of the teeth. Lingual embrasures of posterior teeth are wider than buccal embrasures.

The curvature of the CEJ is generally greater on the mesial surfaces.

Characteristics of tooth shape and alignment protect the periodontium, preserve the dentition, and enhance self-cleaning mechanisms. Match each anatomic feature with its most closely related corresponding term.

Each of the following is part of the periodontium EXCEPT one. Which one is the EXCEPTION?

What are the arrows pointing to in the illustration below?

Deep pits and fissures on the occlusal surface

Interproximal spaces lie between the teeth and the bone on one side and the proximal surfaces and their contact area on the other side. Interproximal spaces are U-shaped in posterior regions and more rounded in anterior regions.

An overhanging restoration extends above the occlusal surface and prevents normal occlusal contact between the arches.