Unit 14

Question 1

A calibrated probe is used clinically to do all of the following except _____.

Answer 1

determine mobility

Question 2

A class III furcation involvement indicates that __

Answer 2

the tooth has significant bone loss

Question 3

A clinician is assessing a molar tooth for mobility. When alternating pressure is applied to the tooth from the facial and lingual aspects, the tooth moves more than 1 mm in a facial-lingual direction. The tooth does not exhibit any vertical displacement. How would you classify the mobility exhibited by this molar tooth?

Answer 3

Class 2

Question 4

A furcation probe can partially enter the furcation area on the facial aspect of a mandibular first molar, but the probe does not pass completely between the roots. Which symbol should be recorded on the chart for this tooth?

Answer 4

Triangle not filled in

Question 5

A furcation probe has a curved, sharp working-end to reach into furcation areas. Maxillary molar teeth are usually trifurcated, including a palatal root

Answer 5

The first statement is false; the second statement is true.

Question 6

A maxillary first molar has class II furcation involvement between the mesiobuccal and the lingual roots. What classification is the furcation involvement between the distobuccal and the lingual roots?

Answer 6

There is not enough information given in the question to determine the furcation classification.

Question 7

Bleeding on gentle probing is a sign of ___

Answer 7

inflammation

Question 8

Calculate the clinical attachment level for the tooth illustrated below. The distance from the gingival margin to the CEJ is 2.5 mm. Assume that the markings on the color-coded probe are at 3, 6, 9, and 12 mm.

Answer 8

7

Question 9

Calculate the clinical attachment level for the tooth illustrated below. The distance from the gingival margin to the CEJ is 7 mm. Assume that the markings on the color-coded probe are at 3, 6, 9, and 12 mm

Answer 9

7mm

Question 10

Calculate the clinical attachment level for the tooth illustrated below. The distance from the gingival margin to the CEJ is 4 mm. Assume that the markings on the color-coded probe are at 3, 6, 9, and 12 mm.

Answer 10

7mm

Question 11

How serious a problem is loss of attachment to a tooth?

Answer 11

Very serious; it can result in loss of the tooth

Question 12

If the gingival margin is near the CEJ, the clinician can assume that there is either no bone loss or only slight bone loss. Bleeding may not be visible for 10 seconds after a site is gently probed.

Answer 12

The first statement is false; the second statement is true.

Question 13

In gingivitis, where is the crest of the alveolar bone located?

Answer 13

The crest is located about 2 mm apical to (below) the CEJ.

Question 14

In health, where is the crest of the alveolar bone located?

Answer 14

The crest is located about 2 mm apical to (below) the CEJ.

Question 15

In healthy periodontium

Answer 15

A radiograph would indicate alveolar bone filling the furcation areas

Question 16

Mobility is the loosening of a tooth in its socket. Mobility may result from loss of bone support to the tooth.

Answer 16

Both statements are true

Question 17

Probing depths alone are not reliable indicators of the extent of bone support. Clinical attachment levels are calculated using the probing depth and the width of attached gingiva.

Answer 17

The first statement is true; the second statement is false.

Question 18

The distance from the gingival margin to the base of the sulcus or pocket, as measured by a periodontal probe is the _____.

Answer 18

probing depth

Question 19

The estimated position of the structures that support the tooth, as measured by a periodontal probe is the _____.

Answer 19

clinical attachment level

Question 20

The periodontal ligament allows some slight movement of the tooth in its socket. Assess vertical tooth mobility using the end of the instrument handle to press against the occlusal or incisal surface.

Answer 20

Both statements are true

Question 21

The probing depth and the gingival margin level are added together to calculate the clinical attachment level when _______.

Answer 21

recession is present

Question 22

To record the level of the free gingival margin, for gingival recession:

Answer 22

Measure the distance between the CEJ and the gingival margin

Question 23

Where can you expect to find the widest measure of attached gingiva in the mouth?

Answer 23

Anterior teeth

Question 24

Which of the following correctly describes the junctional epithelium?

Answer 24

The tissue that joins the gingiva to the tooth

Question 25

Which of the following teeth does not have a furcation?

Answer 25

Mandibular second premolar