NATIONAL BOARD DENTAL HYGIENE
EXAM 2025- 2026 NEWEST QUESTIONS
AND DETAILED CORRECT ANSWERS |
A+ GRADE
What are 5 considerations to evaluate before the use of
ultrasonic scalers? Correct Answer Demineralized areas,
hypersensitivity, titanium implants, communicable
diseases or respiratory conditions, or dentures
What are 8 contraindications for rubber cup polishing?
Correct Answer Xerostomia, demineralization or decay,
sensitivity, newly erupted teeth, severe gingivitis, lack of
stain, exposed root surfaces, respiratory disorders
What are 5 contraindications for air polish? Correct
Answer Active periodontal infections, soft spongy
conditions, respiratory problems, sodium restricted diets
(hypertension), composites/glass ionomer/luting agents
What type of air polish powder is sodium free? Correct
Answer Aluminum trihydroxide
What are 6 signs of infection? Correct Answer I-Increased
pulse and respiration N-Nodes are enlarged F-function is
impaired E-Erythema, edema, exudate C-complaints of
discomfort T-Temperature (systemic, local, or both)
,What are 4 fat soluble vitamins? Correct Answer A D E K
(All Dieters Eat Kilocalories)
List the 12 cranial nerves: Correct Answer I-Olfactory II-
Optic III-Oculomotor IV-Trochlear V-Trigeminal VI-
Abducans VII-Facial VIII-Auditory IX-Glossopharengeal X-
Vagus XI-Spinal accessory XII-Hypoglossal (On Old
Olympus Towering Top A Finn And German Viewed Some
Hops)
An antiGen is ______ to the body. Correct Answer
ForeiGn
In regards to radiography, what control contrast? Correct
Answer KVP (kontrast)
In regards to radiography, what control the amount of
electrons that are produced? Correct Answer MA (How
MAny)
List the types of the 12 cranial nerves: Correct Answer I-
sensory II-sensory III-motor IV-motor V-both VI-motor VII-
both VIII-sensory IX-both X-both XI-motor XII-motor
(Some Say Marry Money But My Brother Says Big Boobs
Marry Money)
Dentin and Pulp arise from the _____ _____. Correct
Answer Dental Papilla (DP)
Iron deficiency causes what? Correct Answer Burning
tongue (If you iron your tongue it will burn)
,How many grains are in 1 gram? Correct Answer 15
(There are 15 grains of sugar in 1 GRAHAM cracker)
What type of mouth rinse should be avoided for a tobacco
user? Correct Answer Alcohol
Are Streptococcus mutans gram + or gram -? Correct
Answer Gram +
What are 2 mechanisms of action for chlorhexidine
gluconate? Correct Answer Bactericidal, high substantivity
Rapidly adsorbed to the teeth and pellicle, but is released
slowly, prolonging the batericidal effect. What does this
define? Correct Answer High substantivity
What mouth rinse should be used in the presence of
implants? Correct Answer Chlorhexidine
What mouth rinse should be used in the presence of
NUG? Correct Answer Chlorhexidine
What is the most common side effect of Chlorhexidine?
Correct Answer Staining of teeth, tongue, and tooth
colored restorations
Why does the use of Chlorhexidine cause a slight increase
in supragingival calculus formation? Correct Answer
Related to the dead bacteria that remain as a result of the
bactericidal action
, What is an example of quaternary ammonium
compounds? Correct Answer Scope
Do not recommend fluoride mouth rinse to children under
__ years of age. Correct Answer 6
The drinking of alcoholic beverages and tobacco use has
a synergistic effect in the initiation of what? Correct
Answer Head and neck cancers
All of the following are properties of a good disinfectant
EXCEPT one. Which on is the EXCEPTION? a. Has a
residual effect b. Kills ALL microorganisms
c.Enviornmentally compatible d. Broad-spectrum
antimicrobial Correct Answer Kills ALL microorganisms
One of the disadvantages of steam sterilization is what?
Correct Answer Corrodes carbon-steel instruments
All of the following are examples of biohazard waste
EXCEPT one. Which one is the EXCEPTION? a.A needle
b.A moist facial mask c.A gauze square dripping with
blood d.An extracted tooth covered with blood. Correct
Answer A moist facial mask
A patient, age 55, has a pulse rate of 52. This pulse is
considered: Correct Answer Below normal
Which agency monitors the fluoride content in bottled
water? Correct Answer FDA
EXAM 2025- 2026 NEWEST QUESTIONS
AND DETAILED CORRECT ANSWERS |
A+ GRADE
What are 5 considerations to evaluate before the use of
ultrasonic scalers? Correct Answer Demineralized areas,
hypersensitivity, titanium implants, communicable
diseases or respiratory conditions, or dentures
What are 8 contraindications for rubber cup polishing?
Correct Answer Xerostomia, demineralization or decay,
sensitivity, newly erupted teeth, severe gingivitis, lack of
stain, exposed root surfaces, respiratory disorders
What are 5 contraindications for air polish? Correct
Answer Active periodontal infections, soft spongy
conditions, respiratory problems, sodium restricted diets
(hypertension), composites/glass ionomer/luting agents
What type of air polish powder is sodium free? Correct
Answer Aluminum trihydroxide
What are 6 signs of infection? Correct Answer I-Increased
pulse and respiration N-Nodes are enlarged F-function is
impaired E-Erythema, edema, exudate C-complaints of
discomfort T-Temperature (systemic, local, or both)
,What are 4 fat soluble vitamins? Correct Answer A D E K
(All Dieters Eat Kilocalories)
List the 12 cranial nerves: Correct Answer I-Olfactory II-
Optic III-Oculomotor IV-Trochlear V-Trigeminal VI-
Abducans VII-Facial VIII-Auditory IX-Glossopharengeal X-
Vagus XI-Spinal accessory XII-Hypoglossal (On Old
Olympus Towering Top A Finn And German Viewed Some
Hops)
An antiGen is ______ to the body. Correct Answer
ForeiGn
In regards to radiography, what control contrast? Correct
Answer KVP (kontrast)
In regards to radiography, what control the amount of
electrons that are produced? Correct Answer MA (How
MAny)
List the types of the 12 cranial nerves: Correct Answer I-
sensory II-sensory III-motor IV-motor V-both VI-motor VII-
both VIII-sensory IX-both X-both XI-motor XII-motor
(Some Say Marry Money But My Brother Says Big Boobs
Marry Money)
Dentin and Pulp arise from the _____ _____. Correct
Answer Dental Papilla (DP)
Iron deficiency causes what? Correct Answer Burning
tongue (If you iron your tongue it will burn)
,How many grains are in 1 gram? Correct Answer 15
(There are 15 grains of sugar in 1 GRAHAM cracker)
What type of mouth rinse should be avoided for a tobacco
user? Correct Answer Alcohol
Are Streptococcus mutans gram + or gram -? Correct
Answer Gram +
What are 2 mechanisms of action for chlorhexidine
gluconate? Correct Answer Bactericidal, high substantivity
Rapidly adsorbed to the teeth and pellicle, but is released
slowly, prolonging the batericidal effect. What does this
define? Correct Answer High substantivity
What mouth rinse should be used in the presence of
implants? Correct Answer Chlorhexidine
What mouth rinse should be used in the presence of
NUG? Correct Answer Chlorhexidine
What is the most common side effect of Chlorhexidine?
Correct Answer Staining of teeth, tongue, and tooth
colored restorations
Why does the use of Chlorhexidine cause a slight increase
in supragingival calculus formation? Correct Answer
Related to the dead bacteria that remain as a result of the
bactericidal action
, What is an example of quaternary ammonium
compounds? Correct Answer Scope
Do not recommend fluoride mouth rinse to children under
__ years of age. Correct Answer 6
The drinking of alcoholic beverages and tobacco use has
a synergistic effect in the initiation of what? Correct
Answer Head and neck cancers
All of the following are properties of a good disinfectant
EXCEPT one. Which on is the EXCEPTION? a. Has a
residual effect b. Kills ALL microorganisms
c.Enviornmentally compatible d. Broad-spectrum
antimicrobial Correct Answer Kills ALL microorganisms
One of the disadvantages of steam sterilization is what?
Correct Answer Corrodes carbon-steel instruments
All of the following are examples of biohazard waste
EXCEPT one. Which one is the EXCEPTION? a.A needle
b.A moist facial mask c.A gauze square dripping with
blood d.An extracted tooth covered with blood. Correct
Answer A moist facial mask
A patient, age 55, has a pulse rate of 52. This pulse is
considered: Correct Answer Below normal
Which agency monitors the fluoride content in bottled
water? Correct Answer FDA
