NBDHE Periodontal Assessment and Treatment Questions and Answers

Question 1

A patient presents with a probing depth of 6 mm on the mesial-buccal of tooth #30. The gingival margin is located 2 mm coronal to the cementoenamel junction (CEJ). What is the calculated clinical attachment loss (CAL) for this site?

Accepted Answer

4 mm

Answer

To calculate Clinical Attachment Loss (CAL) when the gingival margin is coronal to the CEJ (indicating gingival enlargement or a pseudopocket), you subtract the distance from the gingival margin to the CEJ from the probing depth. In this case: 6 mm (Probing Depth) - 2 mm (Gingival Margin to CEJ) = 4 mm CAL.

Question 2

Which of the following is considered the primary etiologic factor for periodontal disease?

Accepted Answer

Bacterial plaque biofilm

Answer

While genetics, smoking, and systemic diseases like diabetes are significant risk factors that modify the host response, bacterial plaque biofilm is universally recognized as the primary initiating factor for gingivitis and periodontitis.

Question 3

During a periodontal assessment of a multi-rooted tooth, the dental hygienist can detect the furcation with a Nabers probe, but it does not pass completely through. The bone between the roots is intact, allowing only partial penetration. According to Glickman's classification, this is classified as:

Accepted Answer

Class II Furcation

Answer

Glickman's classification describes a Class II furcation as a lesion where the probe can enter the furcation area but cannot pass through to the other side because a portion of the alveolar bone and periodontal ligament remains intact.

Question 4

A patient is scheduled for a 4-6 week re-evaluation following non-surgical periodontal therapy (NSPT). Which of the following clinical signs is the BEST indicator of successful initial therapy?

Accepted Answer

Absence of bleeding on probing

Answer

The absence of bleeding on probing is the most reliable clinical sign indicating a reduction in gingival inflammation and a positive response to NSPT. While other factors are important, the resolution of inflammation, evidenced by no bleeding, is the primary short-term goal.

Question 5

All of the following are considered non-modifiable risk factors for periodontal disease EXCEPT:

Accepted Answer

Stress

Answer

Stress is considered a modifiable risk factor because individuals can potentially alter their coping mechanisms or reduce stressors, which can in turn affect their immune response and oral hygiene habits. Age, genetic factors, and osteoporosis are generally considered non-modifiable.

NBDHE Test Practice Test

NBDHE Test Practice Test

NBDHE Periodontal Assessment and Treatment Questions and Answers