1|Page
NBDHE (National Board Dental Hygiene
Examination) Pharmacology Newest 2025
section with accurate and verified
questions covering drug classifications,
mechanisms of action, adverse effects,
contraindications, and their implications in
dental hygiene
1
,2|Page
Primarily, systemic fluorides protect the teeth by which of the following actions?
A. Lowering their surface energy
B. Creating bacteriostasis
C. Inhibiting enzyme activity
D. Reducing the fluoroapatite solubility
E. Improving their morphology ......answer.....D
Bell's palsy involves which of the following cranial nerves?
A. III B.
IV
c. V
D. VII
E. IX ......answer.....D
2
,3|Page
Periodontal disease is considered to be controlled when
A. no bleeding on probing is present.
B. the gingival tissue is firm,pink and stippled.
C. no pockets are deeper than 3 mm.
D. calculus and plaque have been removed E. the gingival tissue height
approximates the cementoenamel junction. ......answer.....A
Curets can be hand-sharpened on a flat stone. This process becomes the MOST
effective when the face of the curet meets the stone at an angle of
A."45-60".
B."70-80". C."80-90".
D."100-110".
E."120-130". ......answer.....D
3
, 4|Page
Radiographic intensifying screens are used for
A magnifying images. B.
increasing detail.
C. reducing the exposure time.
D. speeding the processing time.
E decreasing the processing time ......answer.....C
Following an occurrence of primary herpetic gingivostomatitis, the herpes simplex
virus can remain dormant in which of the following?
A. Muscle
B. Epithelium
C. Bloodstream
D. Sensory ganglia
E. Connective tissue ......answer.....D
4
NBDHE (National Board Dental Hygiene
Examination) Pharmacology Newest 2025
section with accurate and verified
questions covering drug classifications,
mechanisms of action, adverse effects,
contraindications, and their implications in
dental hygiene
1
,2|Page
Primarily, systemic fluorides protect the teeth by which of the following actions?
A. Lowering their surface energy
B. Creating bacteriostasis
C. Inhibiting enzyme activity
D. Reducing the fluoroapatite solubility
E. Improving their morphology ......answer.....D
Bell's palsy involves which of the following cranial nerves?
A. III B.
IV
c. V
D. VII
E. IX ......answer.....D
2
,3|Page
Periodontal disease is considered to be controlled when
A. no bleeding on probing is present.
B. the gingival tissue is firm,pink and stippled.
C. no pockets are deeper than 3 mm.
D. calculus and plaque have been removed E. the gingival tissue height
approximates the cementoenamel junction. ......answer.....A
Curets can be hand-sharpened on a flat stone. This process becomes the MOST
effective when the face of the curet meets the stone at an angle of
A."45-60".
B."70-80". C."80-90".
D."100-110".
E."120-130". ......answer.....D
3
, 4|Page
Radiographic intensifying screens are used for
A magnifying images. B.
increasing detail.
C. reducing the exposure time.
D. speeding the processing time.
E decreasing the processing time ......answer.....C
Following an occurrence of primary herpetic gingivostomatitis, the herpes simplex
virus can remain dormant in which of the following?
A. Muscle
B. Epithelium
C. Bloodstream
D. Sensory ganglia
E. Connective tissue ......answer.....D
4
