NBDHE REVIEW EXAM QUESTIONS &
DETAILED COMPLETE SOLUTIONS
ALL PASSED
A dental hygienist receives a grant to develop a caries prevention program in a
nonfluoridated community with a recent population growth of families with young
children. The most beneficial community based program that could be implemented
would be to
a. develop and implement a sealant program targeted at specific age groups
b. implement a school based fluoride supplement program
c. hire a dentist and dental hygienist to staff a mobile dental clinic
d. develop a sealant and fluoride program based on community needs and available
dental personnel - Correct Answer ✔✔ d. develop a sealant and fluoride program based
on community needs and available dental personnel
Sensitivity, a characteristic of a diagnostic test, should determine if a high proportion of
individuals who are tested for a disease and found positive:
a. have utilized the appropriate diagnostic test to diagnose the absence of disease
b. will seek treatment once notified
c. will not subsequently develop the disease
d. will subsequently develop the disease - Correct Answer ✔✔ d. will subsequently
develop the disease
Xerostomia can be associated with all of the following except one. Which is the
exception?
a. consumption of acidic foods
b. mouthbreathing
c. antidepressants and anti-anxiety medication
d. antihypertensive medications - Correct Answer ✔✔ a. consumption of acidic foods
Which condition is characterized by large joint destruction and typically affects younger
men and older women?
a. Osteoporosis
b. rheumatoid arthritis
c. sickle cell disease
d. osteoarthritis - Correct Answer ✔✔ b. rheumatoid arthritis
An ammonia like breath is characteristic of which of the following conditions?
a. renal disease
b. liver disease
c. leukemia
d. diabetes - Correct Answer ✔✔ a. renal disease
,Class III malocclusions are most commonly exhibited in the patient with:
a. down syndrome
b. epilepsy
c. cerebral palsy
d. cystic fibrosis - Correct Answer ✔✔ a. down syndrome
All of the following are signs of Lupus except one. The exception is?
a. joint deformities
b. photosensitivity
c. anemia
d. malar rash
e. arthralgias - Correct Answer ✔✔ c. anemia
What occurs when topical fluoride is applied to demineralized area?
a. there is no change in the strength of the tooth structure
b. tooth structures get weaker
c. the demineralized area turns yellow
d. the tooth structure gets stronger - Correct Answer ✔✔ d. the tooth structure gets
stronger
What is the best method of fluoride application for caries prevention?
a. low concentration, high frequency
b. high concentration, high frequency
c. low concentration, low frequency
d. high concentration, low frequency - Correct Answer ✔✔ a. low concentration, high
frequency
What is the safely tolerated dose of a topical fluoride?
a. less than 5mg/kg
b. one fourth the certainly lethal dose
c. the amount of drug likely to cause death if not intercepted by antidotal therapy
d. less than 15mg/kg - Correct Answer ✔✔ b. one fourth the certainly lethal dose
Which is the following topical fluoride delivery systems is BEST fir an individual with
rampant caries?
a. toothbrushing
b. tray
c. painting
d. rinse - Correct Answer ✔✔ b. tray
Your patient has Type II or III embrassure spaces with moderate plaque at the gingival
margin with areas of exposed furcations. Which aid would be appropriate to use?
a. pipe cleaner
b. toothpick in holder
c. yarn
, d. dental floss - Correct Answer ✔✔ b. toothpick in holder
The majority of x-rays produced by dental x-ray machines are formed by...
a. Bremsstrahlung radiation
b. characteristic radiation
c. coherent scattering
d. photoelectric effect - Correct Answer ✔✔ a. Bremsstrahlung radiation
Which of the following is the BEST attenuator of an x-ray beam?
a. aluminum
b. zinc
c. lead
d. tin
e. tungsten - Correct Answer ✔✔ c. lead
In the rare event someone who works in a dental office has no shielding available and
cannot leave the room, she should stand at least how many feet from the x-ray
machine?
a. 3
b. 4
c. 5
d. 6
e. 7 - Correct Answer ✔✔ d. 6
When radiographs are made on patients in a dental office, leaded (protective) aprons
should be used on...
a. female patients in the childbearing years
b. children
c. apprehensive patients
d. all patients
e. those patients who request them - Correct Answer ✔✔ d. all patients
Periapical or bitewing radiographs that exhibit the error of overlapping proximal
structures are the result of...
a. incorrect vertical positioning
b. incorrect vertical positioning of the cone
c. incorrect horizontal positioning of the cone
d. incorrect vertical angulation, but correct horizontal angulation - Correct Answer ✔✔ c.
incorrect horizontal positioning of the cone
The radiopacity that frequently obliterates the apices of maxillary molars when using the
bisecting angle technique for intraoral radiography is the...
a. zygoma & the zygomatic process of the maxilla
b. orbital process of the zygomatic bone
c. palatine bone and the zygoma
d. maxillary sinus and nasal fossa
DETAILED COMPLETE SOLUTIONS
ALL PASSED
A dental hygienist receives a grant to develop a caries prevention program in a
nonfluoridated community with a recent population growth of families with young
children. The most beneficial community based program that could be implemented
would be to
a. develop and implement a sealant program targeted at specific age groups
b. implement a school based fluoride supplement program
c. hire a dentist and dental hygienist to staff a mobile dental clinic
d. develop a sealant and fluoride program based on community needs and available
dental personnel - Correct Answer ✔✔ d. develop a sealant and fluoride program based
on community needs and available dental personnel
Sensitivity, a characteristic of a diagnostic test, should determine if a high proportion of
individuals who are tested for a disease and found positive:
a. have utilized the appropriate diagnostic test to diagnose the absence of disease
b. will seek treatment once notified
c. will not subsequently develop the disease
d. will subsequently develop the disease - Correct Answer ✔✔ d. will subsequently
develop the disease
Xerostomia can be associated with all of the following except one. Which is the
exception?
a. consumption of acidic foods
b. mouthbreathing
c. antidepressants and anti-anxiety medication
d. antihypertensive medications - Correct Answer ✔✔ a. consumption of acidic foods
Which condition is characterized by large joint destruction and typically affects younger
men and older women?
a. Osteoporosis
b. rheumatoid arthritis
c. sickle cell disease
d. osteoarthritis - Correct Answer ✔✔ b. rheumatoid arthritis
An ammonia like breath is characteristic of which of the following conditions?
a. renal disease
b. liver disease
c. leukemia
d. diabetes - Correct Answer ✔✔ a. renal disease
,Class III malocclusions are most commonly exhibited in the patient with:
a. down syndrome
b. epilepsy
c. cerebral palsy
d. cystic fibrosis - Correct Answer ✔✔ a. down syndrome
All of the following are signs of Lupus except one. The exception is?
a. joint deformities
b. photosensitivity
c. anemia
d. malar rash
e. arthralgias - Correct Answer ✔✔ c. anemia
What occurs when topical fluoride is applied to demineralized area?
a. there is no change in the strength of the tooth structure
b. tooth structures get weaker
c. the demineralized area turns yellow
d. the tooth structure gets stronger - Correct Answer ✔✔ d. the tooth structure gets
stronger
What is the best method of fluoride application for caries prevention?
a. low concentration, high frequency
b. high concentration, high frequency
c. low concentration, low frequency
d. high concentration, low frequency - Correct Answer ✔✔ a. low concentration, high
frequency
What is the safely tolerated dose of a topical fluoride?
a. less than 5mg/kg
b. one fourth the certainly lethal dose
c. the amount of drug likely to cause death if not intercepted by antidotal therapy
d. less than 15mg/kg - Correct Answer ✔✔ b. one fourth the certainly lethal dose
Which is the following topical fluoride delivery systems is BEST fir an individual with
rampant caries?
a. toothbrushing
b. tray
c. painting
d. rinse - Correct Answer ✔✔ b. tray
Your patient has Type II or III embrassure spaces with moderate plaque at the gingival
margin with areas of exposed furcations. Which aid would be appropriate to use?
a. pipe cleaner
b. toothpick in holder
c. yarn
, d. dental floss - Correct Answer ✔✔ b. toothpick in holder
The majority of x-rays produced by dental x-ray machines are formed by...
a. Bremsstrahlung radiation
b. characteristic radiation
c. coherent scattering
d. photoelectric effect - Correct Answer ✔✔ a. Bremsstrahlung radiation
Which of the following is the BEST attenuator of an x-ray beam?
a. aluminum
b. zinc
c. lead
d. tin
e. tungsten - Correct Answer ✔✔ c. lead
In the rare event someone who works in a dental office has no shielding available and
cannot leave the room, she should stand at least how many feet from the x-ray
machine?
a. 3
b. 4
c. 5
d. 6
e. 7 - Correct Answer ✔✔ d. 6
When radiographs are made on patients in a dental office, leaded (protective) aprons
should be used on...
a. female patients in the childbearing years
b. children
c. apprehensive patients
d. all patients
e. those patients who request them - Correct Answer ✔✔ d. all patients
Periapical or bitewing radiographs that exhibit the error of overlapping proximal
structures are the result of...
a. incorrect vertical positioning
b. incorrect vertical positioning of the cone
c. incorrect horizontal positioning of the cone
d. incorrect vertical angulation, but correct horizontal angulation - Correct Answer ✔✔ c.
incorrect horizontal positioning of the cone
The radiopacity that frequently obliterates the apices of maxillary molars when using the
bisecting angle technique for intraoral radiography is the...
a. zygoma & the zygomatic process of the maxilla
b. orbital process of the zygomatic bone
c. palatine bone and the zygoma
d. maxillary sinus and nasal fossa
