Deck 21: Caries and Periodontal Disease

Question 1

Identify the most common reason for exposing dental radiographs:

A)to confirm the presence of periodontal disease
B)to confirm suspected pathology
C)caries detection
D)to locate impacted teeth

Answer 1

caries detection

Question 2

Teeth with short conical roots and bone loss have a very _________ prognosis.

Answer 2

poor

Question 3

The normal level of interproximal bone is:

A)at the cervical line
B)about 1 to 1.5 mm above or below the cementoenamel junction
C)about 3 mm above the cementoenamel junction
D)none of the above

Answer 3

about 1 to 1.5 mm above or below the cementoenamel junction

Question 4

Once occlusal caries has reached the DEJ, it can appear radiographically as:

A)triangular shape
B)rectangular shape
C)horizontal radiolucent line
D)horizontal radiopaque line

Question 5

Radiographically when caries reaches the dentinoenamel junction it ___________.

Question 6

The height of alveolar bone is best evaluated on periapical films taken by the _______________.

Question 7

Etiologic factors for periodontal disease that can be seen on radiographs include:

A)calculus
B)open contacts
C)overcontoured restorations
D)all of the above

Question 8

Caries that has penetrated halfway through the enamel surface is termed:

A)incipient
B)advanced
C)moderate
D)severe

Question 9

Identify the teeth most often demonstrating cervical burnout:

A)all posterior teeth
B)mandibular incisors and molars
C)maxillary canines and premolars
D)all anterior teeth

Question 10

All of the following periodontal changes do not appear on radiographs EXCEPT:

A)moderate bone loss
B)inflammation
C)hypertrophy
D)recession

Question 11

All of the following conditions present with a better periodontal prognosis EXCEPT:

A)a tooth with a greater length embedded in bone
B)a tooth with an anatomically short root
C)a molar tooth with widely spaced roots
D)a tooth with a bulbous root

Question 12

Interproximal caries is best seen on:

A)periapical films utilizing bisecting angle technique
B)occlusal radiographs
C)bitewing radiographs
D)panoramic radiographs

Question 13

Bitewing radiographs that have incorrect horizontal angulations will make interproximal caries detection:

A)easier
B)difficult
C)almost impossible
D)none of the above

Question 14

An example of caries that is almost never seen on radiographs is:

A)incisal
B)interproximal
C)lingual
D)incipient

Question 15

Cement bases under restorations appear __________ on a radiograph.

Question 16

Identify a radiograph recommended for detecting bone loss of 5 mm or greater:

A)vertical bitewing
B)periapical projections with bisecting angle technique
C)panoramic radiography
D)occlusal images

Question 17

All of the following conditions resemble radiographic dental caries EXCEPT:

A)abrasion
B)attrition
C)amalgam overhang
D)cervical burnout

Question 18

Radiographically, the alveolar crest appears more convex and pointed in the posterior areas. The alveolar crest appears flatter and smoother in the anterior areas.

A)both statements are true
B)both statements are false
C)the first statement is true;the second statement is false
D)the first statement is false;the second statement is true

Question 19

Identify the best way to detect occlusal caries:

A)periapical films utilizing bisecting angle technique
B)occlusal radiographs
C)bitewing radiographs
D)clinical exam with mouth mirror and explorer

Question 20

Caries that radiographically involve the dentin are classified as:

A)early
B)late
C)incipient
D)advanced

Question 21

Furcation involvement of periodontal disease could be found in which of the following teeth?

A)teeth #4, 5, 6
B)teeth #30, 31, 32
C)teeth #10, 11, 12
D)teeth #8, 9, 10

Question 22

Identify the early stage of periodontal disease seen radiographically:

A)changes in the crest of the interproximal bone
B)triangulation of the periodontal membrane
C)gingival inflammation
D)both a and b

Question 23

Advance periodontal disease is characterized by:

A)furcation involvement
B)thickened periodontal membrane
C)advanced vertical bone loss
D)all of the above

Question 24

Resorption that occurs in a plane parallel to the cementoenamel junctions on adjoining teeth describes:

A)vertical bone loss
B)horizontal bone loss
C)infrabony pocket
D)all of the above