NBDHE Periodontal Assessment and Treatment 2

Question 1

According to the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases, Stage III periodontitis is characterized by:

Accepted Answer

Tooth loss due to periodontitis, bone loss to the middle or apical third of the root, or furcation class II or III involvement

Answer

Mild bone loss with probing depths ≤4 mm

Answer

Bone loss limited to the coronal third with no furcation involvement

Answer

Generalized attachment loss with severe systemic complications

Question 2

Which type of bone defect is characterized by bone loss on one root surface only, maintaining normal height on adjacent roots?

Accepted Answer

One-wall (hemiseptal) defect

Answer

Two-wall defect

Answer

Three-wall defect (intrabony)

Answer

Cratering (two-wall interdental)

Question 3

During a periodontal chart, the dental hygienist records a probing depth of 4 mm at the midbuccal of tooth #19 with 2 mm of recession. The clinical attachment level (CAL) is:

Accepted Answer

6 mm

Answer

2 mm

Answer

4 mm

Answer

8 mm

Question 4

Scaling and root planing (SRP) is classified as which level of periodontal therapy?

Accepted Answer

Phase I (cause-related/non-surgical) therapy

Answer

Phase II (surgical) therapy

Answer

Phase III (restorative) therapy

Answer

Phase IV (maintenance) therapy

Question 5

Which systemic condition is most strongly associated with necrotizing periodontal diseases (NPD)?

Accepted Answer

HIV infection/immunosuppression and malnutrition/stress

Answer

Type 2 diabetes mellitus

Answer

Osteoporosis

Answer

Cardiovascular disease

Question 6

Chlorhexidine gluconate 0.12% mouthrinse is used as an adjunct in periodontal therapy primarily because of its:

Accepted Answer

Broad-spectrum antimicrobial action and substantivity (prolonged binding to oral tissues)

Answer

Fluoride content for caries prevention

Answer

Anti-inflammatory properties comparable to NSAIDs

Answer

Ability to remove calculus deposits