Question 1

Calculus ____ on a dental radiograph.&#10;A) Appears radiolucent&#10;B) Appears radiopaque&#10;C) Does not appear&#10;D) Appears dark or black

Accepted Answer

Calculus appears radiopaque on a dental radiograph, meaning it will appear white or light gray.

Question 2

The normal healthy alveolar crest is located approximately ____ mm apical to the cementoenamel junction.&#10;A) 0.5 to 1.0&#10;B) 1.0 to 1.5&#10;C) 1.5 to 2.0&#10;D) 2.0 to 2.5

Accepted Answer

The normal healthy alveolar crest is typically located about 1.5 to 2.0 mm apical to the cementoenamel junction (CEJ). This distance allows for the presence of the biologic width, which includes the junctional epithelium and connective tissue attachment.

Question 3

Generalized bone loss occurs evenly throughout the dental arches, including greater than ____ of the sites involved.&#10;A) 10%&#10;B) 20%&#10;C) 30%&#10;D) 50%

Accepted Answer

Generalized bone loss in dentistry is defined as affecting more than 30% of the sites in the dental arches.

Question 4

The normal periodontal ligament space appears as a ____ line.&#10;A) Thin radiopaque&#10;B) Thin radiolucent&#10;C) Thick radiopaque&#10;D) Thick radiolucent

Accepted Answer

The periodontal ligament space appears as a thin radiolucent line on a dental radiograph. This space is located between the root of a tooth and the surrounding bone and contains fibers that anchor the tooth in place. The radiolucency is due to the presence of soft tissues in the ligament space, such as blood vessels and nerves.

Question 5

ADA Case Type II is:&#10;A) Gingivitis.&#10;B) Mild or slight periodontitis.&#10;C) Moderate periodontitis.&#10;D) Advanced or severe periodontitis.

Accepted Answer

ADA Case Type II refers to mild or slight periodontitis, characterized by early stages of bone loss and periodontal pocket formation.

Question 6

Moderate bone loss is defined as a loss of ____ mm.&#10;A) 1 to 2&#10;B) 2 to 3&#10;C) 3 to 4&#10;D) 4 to 5

Accepted Answer

Moderate bone loss is typically defined as a loss of 3 to 4 mm.

Question 7

The ____ radiograph using the ____ technique is the film of choice for the evaluation of periodontal disease.&#10;A) Bite-wing; paralleling&#10;B) Bite-wing; bisecting&#10;C) Periapical; paralleling&#10;D) Periapical; bisecting

Accepted Answer

Periapical radiographs using the paralleling technique are the film of choice for evaluating periodontal disease because they provide an accurate representation of the periodontal bone levels and exhibit less distortion compared to other techniques. Bite-wing radiographs are useful for detecting interproximal caries but are limited in their ability to detect periodontal bone loss. Bisecting angle technique is also limited in its ability to accurately depict bone levels in periodontal disease.

Question 8

The severity of bone loss is measured by the:&#10;A) Pocket depth.&#10;B) Recession.&#10;C) Amount of inflammation.&#10;D) Clinical attachment loss.

Accepted Answer

Clinical attachment loss (CAL) is the distance from the cementoenamel junction (CEJ) to the most apical extent of the periodontal probe tip that can be inserted into the periodontal pocket. It reflects the amount of tooth-supporting tissue that has been lost due to periodontitis and is the most reliable measure of the severity of bone loss. Pocket depth and recession also provide information about the degree of periodontal destruction but are less accurate than CAL in measuring the amount of bone loss. Inflammation is a clinical sign of periodontitis but does not directly measure the extent of bone loss.

Question 9

The ____ of adjacent teeth can be used as a plane of reference in determining the pattern of bone loss present.&#10;A) Marginal ridge height&#10;B) Cementoenamel junctions (CEJs)&#10;C) Pulp chambers&#10;D) Cementum thickness

Accepted Answer

The cementoenamel junctions (CEJs), which mark the boundary between the enamel of the tooth crown and the cementum of the tooth root, can serve as a reliable reference point in evaluating patterns of bone loss around teeth. By measuring the level of CEJ on adjacent teeth, clinicians can identify areas where the bone has receded or where there are pockets between the gum and tooth surface. This information helps guide treatment planning for periodontal disease. The other options (marginal ridge height, pulp chambers, and cementum thickness) are not typically used as reference points in assessing bone loss.

Question 10

Radiographs permit the evaluation of ____ in the detection of periodontal disease.&#10;A) Pocket depth&#10;B) Soft tissue&#10;C) Inflammation&#10;D) Bone

Accepted Answer

Radiographs allow visualization of the bone levels surrounding the teeth, which is necessary for diagnosing and monitoring periodontal disease. Pocket depth, soft tissue, and inflammation are evaluated clinically through periodontal probing and visual examination.

Question 11

In health, the lamina dura around the roots of the teeth appears as a(n) ____ line.&#10;A) Dense radiolucent&#10;B) Dense radiopaque&#10;C) Intermittent radiolucent&#10;D) Intermittent radiopaque

Accepted Answer

The answer of In health, the lamina dura around the...

Question 12

The periodontal ligament space is located between the root of the tooth and the:&#10;A) Crest of alveolar bone.&#10;B) Lamina dura.&#10;C) Cementum.&#10;D) Spongy bone.

Accepted Answer

The answer of The periodontal ligament space is located between...

Deck 34: Interpretation of Periodontal Disease