NBDHE Board Exam Questions and Correct
Answers
Question 1
Jessica the hygienist is already running late in seeing her patients today. The patient
now in her chair is on a periodontal maintenance routine and presented with a large
piece of subgingival calculus on the distal of tooth number two. Jessica informed the
patient of the deposit and spent much time in instrumentation of the area. To her
disappointment, the deposit is still there when she explores the site at the very end of
the appointment. She has no more time to spend on the area. The patient asks Jessica
if the deposit is gone, but Jessica doesn't want to keep the patient in her chair any
longer. Jessica is tempted to tell the patient that everything is fine so that she can
move on with her day. Which ethical value is being put to the test in this situation?
a. confidentiality
b. autonomy
c. societal trust
d. veracity
Correct Answer
d. veracity
Question 2
Through which of the following ways do ultrasonic scalers work?
a. cavitation
b. vertical stroke
c. lateral pressure
d. vibrations from the sound waves
Correct Answer
a. cavitation
Page 1 of 529
,Question 3
What is insoluble in water, soluble in fatty substances, and soluble in organic
solvents?
a. lipids
b. starch
c. carbohydrates
d. protein
Correct Answer
a. lipids
Question 4
what limits the strength of bonding agent if not removed?
a. acid
b. smear layer
c. etching
d. primer
Correct Answer
b. smear layer
Question 5
Actin and myosin are proteins contained within a
a. myofibril
b. myofilament
c. fiber
d. sarcoplasmic reticulum
Correct Answer
a. myofibril
Page 2 of 529
,Question 6
When does keratinization appear during cutaneous wound healing?
a. within 24 hours
b. within 5 days
c. by the 2nd week
d. keratinization is not part of the healing process
Correct Answer
b. within 5 days
Question 7
calcium sulfate hemihydrate is the central ingredient of dental gypsum products.
What is it used for?
a. caries
b. casts for dental prosthesis manufacturing
c. casts for caries filling and dental prosthesis manufacturing
d. veneer development and identification
Correct Answer
b. casts for dental prosthesis manufacturing
Question 8
A patient, age 55, has a pulse rate of 52. This pulse is considered
a. normal
b. above normal
c. below normal
d. normal for a 9-year-old
Correct Answer
c. below normal
Page 3 of 529
, Question 9
what group of joints allows for movements around three or more axes in three or
more planes?
a. synovial
b. condyloid
c. multiaxial
d. biaxial
Correct Answer
c. multiaxial
Question 10
Which endocrine gland is the largest?
a. parathyroid
b. thymus
c. ebner
d. thyroid
Correct Answer
d. thyroid
Question 11
Damage to the precentral gyrus of the cerebral cortex
a. spastic paralysis
b. sensory loss
c. intention tremor
d. tremor at rest
Correct Answer
a. spastic paralysis
Page 4 of 529
Answers
Question 1
Jessica the hygienist is already running late in seeing her patients today. The patient
now in her chair is on a periodontal maintenance routine and presented with a large
piece of subgingival calculus on the distal of tooth number two. Jessica informed the
patient of the deposit and spent much time in instrumentation of the area. To her
disappointment, the deposit is still there when she explores the site at the very end of
the appointment. She has no more time to spend on the area. The patient asks Jessica
if the deposit is gone, but Jessica doesn't want to keep the patient in her chair any
longer. Jessica is tempted to tell the patient that everything is fine so that she can
move on with her day. Which ethical value is being put to the test in this situation?
a. confidentiality
b. autonomy
c. societal trust
d. veracity
Correct Answer
d. veracity
Question 2
Through which of the following ways do ultrasonic scalers work?
a. cavitation
b. vertical stroke
c. lateral pressure
d. vibrations from the sound waves
Correct Answer
a. cavitation
Page 1 of 529
,Question 3
What is insoluble in water, soluble in fatty substances, and soluble in organic
solvents?
a. lipids
b. starch
c. carbohydrates
d. protein
Correct Answer
a. lipids
Question 4
what limits the strength of bonding agent if not removed?
a. acid
b. smear layer
c. etching
d. primer
Correct Answer
b. smear layer
Question 5
Actin and myosin are proteins contained within a
a. myofibril
b. myofilament
c. fiber
d. sarcoplasmic reticulum
Correct Answer
a. myofibril
Page 2 of 529
,Question 6
When does keratinization appear during cutaneous wound healing?
a. within 24 hours
b. within 5 days
c. by the 2nd week
d. keratinization is not part of the healing process
Correct Answer
b. within 5 days
Question 7
calcium sulfate hemihydrate is the central ingredient of dental gypsum products.
What is it used for?
a. caries
b. casts for dental prosthesis manufacturing
c. casts for caries filling and dental prosthesis manufacturing
d. veneer development and identification
Correct Answer
b. casts for dental prosthesis manufacturing
Question 8
A patient, age 55, has a pulse rate of 52. This pulse is considered
a. normal
b. above normal
c. below normal
d. normal for a 9-year-old
Correct Answer
c. below normal
Page 3 of 529
, Question 9
what group of joints allows for movements around three or more axes in three or
more planes?
a. synovial
b. condyloid
c. multiaxial
d. biaxial
Correct Answer
c. multiaxial
Question 10
Which endocrine gland is the largest?
a. parathyroid
b. thymus
c. ebner
d. thyroid
Correct Answer
d. thyroid
Question 11
Damage to the precentral gyrus of the cerebral cortex
a. spastic paralysis
b. sensory loss
c. intention tremor
d. tremor at rest
Correct Answer
a. spastic paralysis
Page 4 of 529
