NBDHE NBDHE Dental Hygiene Care 3

Question 1

A patient taking warfarin requires scaling and root planing. The INR is 3.8. What is the most appropriate action?

Accepted Answer

Consult the patient's physician before treatment

Answer

An INR above 3.5 indicates excessive anticoagulation; physician consultation is required before invasive periodontal procedures.

Question 2

Which oral hygiene aid is most recommended for a patient with fixed orthodontic appliances?

Accepted Answer

Interproximal brush (proxy brush)

Answer

Interproximal brushes are effective at cleaning around brackets, wires, and under pontics of orthodontic appliances.

Question 3

A 45-year-old male patient presents with generalized bone loss affecting molars and incisors disproportionately, with deep pockets and no significant medical history. This pattern is consistent with:

Accepted Answer

Generalized aggressive periodontitis

Answer

Generalized aggressive periodontitis affects multiple teeth including first molars and incisors and occurs in patients under 30 but can present in older adults.

Question 4

Which of the following best describes the mechanism of action of chlorhexidine gluconate as an antiplaque agent?

Accepted Answer

It disrupts bacterial cell membranes through its cationic charge

Answer

Chlorhexidine's cationic nature allows it to bind to negatively charged bacterial cell walls, disrupting membrane integrity.

Question 5

During periodontal re-evaluation 4–6 weeks after scaling and root planing, a site shows a pocket reduction from 6 mm to 4 mm with no bleeding on probing. What does this indicate?

Accepted Answer

Successful response to therapy; continue with supportive periodontal therapy

Answer

A pocket reduction to 4 mm with no bleeding on probing indicates successful healing and transition to supportive periodontal therapy is appropriate.

NBDHE Test Practice Test

NBDHE Test Practice Test

NBDHE NBDHE Dental Hygiene Care 3