Page 1 of 110
NBDHE BOARD EXAM NEWEST 2025 ACTUAL EXAM
TEST BANK| COMPLETE 450 REAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+| NBDHE BOARD
EXAM PREP 2025 (BRAND NEW!!)
Which of the following cells is most active in antibody production?
A) monocyte
B) mast cell
C) lymphocyte
D) plasma cell - Correct Answer - D) plasma cell
Which of the following defects in restorations could be recontoured?
A) flash
B) fracture
C) open margin
D) undercontoured restoration - Correct Answer - A) flash
Tylenol with codeine falls into which Drug Enforcement Administration
(DEA) schedule of controlled substances?
A) Schedule I
B) Schedule II
C) Schedule III
D) Schedule IV - Correct Answer - C) Schedule III
pg. 1
,Page 2 of 110
Which of the following represents the most efficient mechanism by
which antibodies induced bacteriolysis?
A) release of lymphokines
B) stimulation of macrophages
C) neutralization of bacterial toxins
D) activation of the complement system - Correct Answer - D) activation
of the complement system
What type of immunity is conferred by administration of the hepatitis B
vaccination?
A) innate
B) natural active
C) natural passive
D) artificially acquired active - Correct Answer - D) artificially acquired
active
In a prescription, warnings to the patient regarding the proper use of the
drug are found in the?
A) signa
B) heading
C) inscription
D) subscription - Correct Answer - A) signa
Which of the following immunoglobulins is the largest and is found in
the primary immune response?
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,Page 3 of 110
A) IgA
B) IgD
C) IgM
D) IgG - Correct Answer - C) IgM
Which of the following types of hepatitis is most likely transmitted by
person-to-person contact, generally through fecal contamination, and is
facilitated by poor personal hygiene?
A) HAV
B) HBV
C) HCV
D) HDV - Correct Answer - A) HAV
Tumors are most often found in which of the following salivary glands?
A) parotid
B) minor
C) sublingual
D) submandibular
E) Von Ebner's - Correct Answer - A) parotid
Which of the following structures is derived from ectoderm?
A) pulp
B) dentin
C) enamel
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, Page 4 of 110
D) cementum
E) periodontal ligament - Correct Answer - C) enamel
Which of the following represents the major advantage of using foam-
based APF rather than gel APF?
A) requires less frequent application
B) requires less time for application
C) penetrates deeper into the enamel surface
D) reduces risk of accidental fluoride ingestion - Correct Answer - D)
reduces risk of accidental fluoride ingestion
Which of the following contributes the major buffer in saliva?
A) mucin
B) amylase
C) protein
D) phosphate
E) bicarbonate - Correct Answer - E) bicarbonate
The eugenol that is incorporate into some periodontal packs could do
which of the following?
A) irritate tissue
B) induce fibrinolysis
C) inhibit clot formation
D) cause secondary hemorrhage - Correct Answer - A) irritate tissue
pg. 4
NBDHE BOARD EXAM NEWEST 2025 ACTUAL EXAM
TEST BANK| COMPLETE 450 REAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+| NBDHE BOARD
EXAM PREP 2025 (BRAND NEW!!)
Which of the following cells is most active in antibody production?
A) monocyte
B) mast cell
C) lymphocyte
D) plasma cell - Correct Answer - D) plasma cell
Which of the following defects in restorations could be recontoured?
A) flash
B) fracture
C) open margin
D) undercontoured restoration - Correct Answer - A) flash
Tylenol with codeine falls into which Drug Enforcement Administration
(DEA) schedule of controlled substances?
A) Schedule I
B) Schedule II
C) Schedule III
D) Schedule IV - Correct Answer - C) Schedule III
pg. 1
,Page 2 of 110
Which of the following represents the most efficient mechanism by
which antibodies induced bacteriolysis?
A) release of lymphokines
B) stimulation of macrophages
C) neutralization of bacterial toxins
D) activation of the complement system - Correct Answer - D) activation
of the complement system
What type of immunity is conferred by administration of the hepatitis B
vaccination?
A) innate
B) natural active
C) natural passive
D) artificially acquired active - Correct Answer - D) artificially acquired
active
In a prescription, warnings to the patient regarding the proper use of the
drug are found in the?
A) signa
B) heading
C) inscription
D) subscription - Correct Answer - A) signa
Which of the following immunoglobulins is the largest and is found in
the primary immune response?
pg. 2
,Page 3 of 110
A) IgA
B) IgD
C) IgM
D) IgG - Correct Answer - C) IgM
Which of the following types of hepatitis is most likely transmitted by
person-to-person contact, generally through fecal contamination, and is
facilitated by poor personal hygiene?
A) HAV
B) HBV
C) HCV
D) HDV - Correct Answer - A) HAV
Tumors are most often found in which of the following salivary glands?
A) parotid
B) minor
C) sublingual
D) submandibular
E) Von Ebner's - Correct Answer - A) parotid
Which of the following structures is derived from ectoderm?
A) pulp
B) dentin
C) enamel
pg. 3
, Page 4 of 110
D) cementum
E) periodontal ligament - Correct Answer - C) enamel
Which of the following represents the major advantage of using foam-
based APF rather than gel APF?
A) requires less frequent application
B) requires less time for application
C) penetrates deeper into the enamel surface
D) reduces risk of accidental fluoride ingestion - Correct Answer - D)
reduces risk of accidental fluoride ingestion
Which of the following contributes the major buffer in saliva?
A) mucin
B) amylase
C) protein
D) phosphate
E) bicarbonate - Correct Answer - E) bicarbonate
The eugenol that is incorporate into some periodontal packs could do
which of the following?
A) irritate tissue
B) induce fibrinolysis
C) inhibit clot formation
D) cause secondary hemorrhage - Correct Answer - A) irritate tissue
pg. 4
