Question 1

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

Accepted Answer

Severe bone loss is defined as a loss of 5 mm or greater.Slight bone loss is defined as a loss of 1 to 2 mm.Moderate bone loss is defined as a loss of 3 to 4 mm.

Question 2

You suspect your patient has periodontal disease in the molar regions.Which of the following dental images should you take?&#10;A)Horizontal bite-wing&#10;B)Vertical bite-wing&#10;C)Panoramic&#10;D)Periapical

Accepted Answer

The periapical image using the paralleling technique is the image of choice for the evaluation of periodontal disease.The horizontal bite-wing image is the dental image of choice for the evaluation of caries.The vertical bite-wing image can be used to examine bone levels and is best used as a post-treatment or follow-up image.Although panoramic images are superior to periapical or bite-wing images for visualization of the entire head and jaws,the resolution is less than that seen with intraoral images.

Question 3

Your patient has been diagnosed as having a periodontal classification of ADA case type I.How far below the cement-enamel junction would you expect to see the crestal bone on the dental images?&#10;A)0.5 to 1.0 mm&#10;B)1.0 to 1.5 mm&#10;C)1.5 to 2.0 mm&#10;D)2.0 to 2.5 mm

Accepted Answer

The normal healthy alveolar crest is located approximately 1.5 to 2.0 mm apical to the cemento-enamel junction.

Question 4

A patient with localized bone loss will exhibit bone loss in less than ______ of the areas.&#10;A)10%&#10;B)20%&#10;C)30%&#10;D)50%

Accepted Answer

Generalized bone loss occurs evenly throughout the dental arches,including greater than 30% of the sites involved.Localized bone loss occurs in isolated areas,specifically less than 30% of the sites involved.

Question 5

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

In health,the lamina dura around the roots of the teeth appears as a dense radiopaque line.

Question 6

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 periodontal ligament space is located between the root of the tooth and the lamina dura.

Question 7

Which of the following should you use to determine the extent of your patient's periodontal disease?&#10;A)Pocket depth&#10;B)Recession&#10;C)Amount of inflammation&#10;D)Clinical attachment loss

Accepted Answer

The severity of bone loss is measured by the clinical attachment loss.This is considered to be a more significant clinical parameter than pocket depth.Recession may involve many factors,including toothbrushing technique and bruxism,and does not necessarily involve bone loss.The amount of inflammation does not necessarily reflect or determine bone loss.

Question 8

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 normal periodontal ligament space appears as a thin radiolucent line.

Question 9

ADA Case Type I is&#10;A)gingivitis.&#10;B)mild or slight periodontitis.&#10;C)moderate periodontitis.&#10;D)advanced or severe periodontitis.

Accepted Answer

No bone loss is associated with ADA type I disease (gingivitis).There is no change in bone seen on the dental image.The bone loss associated with ADA type II disease (mild or slight periodontitis)is mild crestal changes.Horizontal or vertical bone loss may be present in type III disease;the distribution of the bone loss may be localized or generalized.The alveolar bone level is approximately 4 to 6 mm apical to the CEJs of adjacent teeth.The bone loss associated with type IV disease (advanced or severe periodontitis)indicates further progression of the disease and is considered severe.The pattern of bone loss may be horizontal or vertical,and the alveolar bone level is 6 mm or greater from the CEJ.Furcation involvement is readily viewed on posterior images.

Question 10

Dental images 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

Dental images permit the evaluation of bone in the detection of periodontal disease.They cannot be used to determine pocket depth.They cannot be used to determine the condition of soft tissue;the clinical examination provides information about the soft tissue.They cannot be used to determine inflammation.

Question 11

Identify the radiopaque area the arrow is pointing to on your patient's dental image.&#10; &#10;A)Calculus&#10;B)Caries&#10;C)Cemento-enamel junction&#10;D)Cementum

Accepted Answer

The answer of Identify the radiopaque area the arrow is...

Question 12

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)cemento-enamel junctions (CEJs)&#10;C)pulp chambers&#10;D)cementum thickness

Accepted Answer

The answer of The _________________ of adjacent teeth can be...

Question 13

Your patient is viewing her bite-wing images and has noticed the small radiopaque pieces on the interproximal surfaces below the contacts of some of her teeth.What is she looking at?&#10;A)Crestal bone&#10;B)Cemento-enamel junction&#10;C)Composite restorations&#10;D)Calculus

Accepted Answer

The answer of Your patient is viewing her bite-wing images...

Deck 34: Interpretation of Periodontal Disease