MOSBY'S NATIONAL BOARD DENTAL
HYGIENE EXAM 2025 QUESTIONS AND
CORRECT ANSWERS | A+ GRADE
Candidiasis is the most common oral characteristic of
Correct Answer Human immunodeficiency virus (HIV)
infections.
Parotid enlargement, xerostomia, commissure lesions,
and perimolysis are common oral characteristics of which
condition? Correct Answer Eating disorders.
Planning a home care routine for a patient with an eating
disorder may include all of the following suggestions
EXCEPT one. Which is the EXCEPTION? Correct Answer
Chlorhexidine rinse.
Pregnant women with poor oral health are at an increased
risk of Correct Answer pyogenic granuloma and low
birthweight babies.
Recommendations for a patient with burning mouth
syndrome include all of the following suggestions EXCEPT
one. Which is the EXCEPTION? Correct Answer
Acetaminophen daily.
Individuals who have undergone radiation to the head and
neck are at increased risk for all of the following conditions
,EXCEPT one. Which one is the EXCEPTION? Correct
Answer Kaposi sarcoma.
Health care workers diagnosed with any of the following
conditions, EXCEPT one. Which one is the EXCEPTION?
Correct Answer Oral candidiasis.
During disinfection of the treatment room the light handles
should be disinfected. Semi-critical items penetrate tissue
and should be autoclavable. Correct Answer The first is
true, second is false.
The most common method of sterilization in a dental office
is the autoclave. An autoclave uses steam sterilization
under pressure to destroy all potentially infectious disease
and pores. Correct Answer Both are true.
Limiting the risk of blood borne pathogen exposure
includes all of the following actions EXCEPT one. Which
one is the EXCEPTION? Correct Answer Recapping
needles by hand.
A Beverly anxious patient may show all of the following
signs and symptoms EXCEPT one. Which one is the
EXCEPTION? Correct Answer Decreased heart rate
All of the following actions may be demonstrated by a
moderately anxious patient EXCEPT one. Which one is
the EXCEPTION? Correct Answer Unnatural long pause
before answering questions.
,Early defibrillation is important to restore a normal heart
rhythm is an individual experiencing cardiac arrest. Each
minute that is delayed, the patients change of survival
diminishes by 10% Correct Answer Both are true.
During a medical emergency, the individual may need
100% positive-pressure oxygen at a high flow rate. One
condition requiring this level of oxygen administration is
chronic obstructive pulmonary disease (COPD) Correct
Answer First is true, second is false.
A patient suddenly sits upright and then stands and is
perspiring, wheezing, and coughing. The respiratory rate
is greater than 30 respirations per minute. The patient
complains of inability to breathe and exhibits nasal flaring.
The likely cause of these signs and symptoms is Correct
Answer an acute asthma attack.
Use of a rubber dam is contraindicated in an individual
with COPD because the rubber dam may transmit
pathogens to the lungs. Correct Answer The statement is
CORRECT but the reason is NOT.
Use of the ultrasonic scaler in an individual with asthma is
controversial because the pathogens found in bacterial
plaque and periodontal pockets may be aspired into the
lungs. Correct Answer Both are correct and related.
Heart attacks, strokes, respiratory disease, and delivery of
low-birthweight, preterm babies are conditions correlated
with moderate to severe periodontal disease. Periodontal
, disease is the cause of these conditions. Correct Answer
First is true, second is false.
All of the following oral complications may be related to
diabetes mellitus (DM) EXCEPT one. Which one is the
EXCEPTION? Correct Answer Oral cancer.
Legislation in all states mandates that members of health
care team report suspicion of child abuse, and many
states also require reporting of spousal or elder abuse and
neglect. This is because approximately 50% to 65% of
physical abuse signs occur in the neck and craniofacial
area. Correct Answer Both are true.
Child neglect may include all of the following signs
EXCEPT one. Which one is the EXCEPTION? Correct
Answer Malocclusion.
All of the following items are indicated for use with dental
implants EXCEPT one. Which one is the EXCEPTION?
Correct Answer Air polishing device.
Routine probing on an implant is controversial. If probing
is done, a fixed reference point should be established as a
baseline for future examinations. Correct Answer Both are
true.
A patient with orthodontic appliances should be instructed
to use an interdental aid to clean around the appliances.
The patient should be instructed to use a chlorhexidine
HYGIENE EXAM 2025 QUESTIONS AND
CORRECT ANSWERS | A+ GRADE
Candidiasis is the most common oral characteristic of
Correct Answer Human immunodeficiency virus (HIV)
infections.
Parotid enlargement, xerostomia, commissure lesions,
and perimolysis are common oral characteristics of which
condition? Correct Answer Eating disorders.
Planning a home care routine for a patient with an eating
disorder may include all of the following suggestions
EXCEPT one. Which is the EXCEPTION? Correct Answer
Chlorhexidine rinse.
Pregnant women with poor oral health are at an increased
risk of Correct Answer pyogenic granuloma and low
birthweight babies.
Recommendations for a patient with burning mouth
syndrome include all of the following suggestions EXCEPT
one. Which is the EXCEPTION? Correct Answer
Acetaminophen daily.
Individuals who have undergone radiation to the head and
neck are at increased risk for all of the following conditions
,EXCEPT one. Which one is the EXCEPTION? Correct
Answer Kaposi sarcoma.
Health care workers diagnosed with any of the following
conditions, EXCEPT one. Which one is the EXCEPTION?
Correct Answer Oral candidiasis.
During disinfection of the treatment room the light handles
should be disinfected. Semi-critical items penetrate tissue
and should be autoclavable. Correct Answer The first is
true, second is false.
The most common method of sterilization in a dental office
is the autoclave. An autoclave uses steam sterilization
under pressure to destroy all potentially infectious disease
and pores. Correct Answer Both are true.
Limiting the risk of blood borne pathogen exposure
includes all of the following actions EXCEPT one. Which
one is the EXCEPTION? Correct Answer Recapping
needles by hand.
A Beverly anxious patient may show all of the following
signs and symptoms EXCEPT one. Which one is the
EXCEPTION? Correct Answer Decreased heart rate
All of the following actions may be demonstrated by a
moderately anxious patient EXCEPT one. Which one is
the EXCEPTION? Correct Answer Unnatural long pause
before answering questions.
,Early defibrillation is important to restore a normal heart
rhythm is an individual experiencing cardiac arrest. Each
minute that is delayed, the patients change of survival
diminishes by 10% Correct Answer Both are true.
During a medical emergency, the individual may need
100% positive-pressure oxygen at a high flow rate. One
condition requiring this level of oxygen administration is
chronic obstructive pulmonary disease (COPD) Correct
Answer First is true, second is false.
A patient suddenly sits upright and then stands and is
perspiring, wheezing, and coughing. The respiratory rate
is greater than 30 respirations per minute. The patient
complains of inability to breathe and exhibits nasal flaring.
The likely cause of these signs and symptoms is Correct
Answer an acute asthma attack.
Use of a rubber dam is contraindicated in an individual
with COPD because the rubber dam may transmit
pathogens to the lungs. Correct Answer The statement is
CORRECT but the reason is NOT.
Use of the ultrasonic scaler in an individual with asthma is
controversial because the pathogens found in bacterial
plaque and periodontal pockets may be aspired into the
lungs. Correct Answer Both are correct and related.
Heart attacks, strokes, respiratory disease, and delivery of
low-birthweight, preterm babies are conditions correlated
with moderate to severe periodontal disease. Periodontal
, disease is the cause of these conditions. Correct Answer
First is true, second is false.
All of the following oral complications may be related to
diabetes mellitus (DM) EXCEPT one. Which one is the
EXCEPTION? Correct Answer Oral cancer.
Legislation in all states mandates that members of health
care team report suspicion of child abuse, and many
states also require reporting of spousal or elder abuse and
neglect. This is because approximately 50% to 65% of
physical abuse signs occur in the neck and craniofacial
area. Correct Answer Both are true.
Child neglect may include all of the following signs
EXCEPT one. Which one is the EXCEPTION? Correct
Answer Malocclusion.
All of the following items are indicated for use with dental
implants EXCEPT one. Which one is the EXCEPTION?
Correct Answer Air polishing device.
Routine probing on an implant is controversial. If probing
is done, a fixed reference point should be established as a
baseline for future examinations. Correct Answer Both are
true.
A patient with orthodontic appliances should be instructed
to use an interdental aid to clean around the appliances.
The patient should be instructed to use a chlorhexidine
