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Dental Hygiene National Board Questions and Answers
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Dental Hygiene National Board Questions and Answers
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Dental Hygiene National BoardQuestions and Answers
A furcation in which the probe goes entirely through the opening is? - ANSWER-Type
III, not type IV because it does not mention recession
A patient returns for a 4-week reevaluation appointment exhibiting bleeding in select
areas. What is the best treatment for this patient? - ANSWER-periodontal debridement
of affected areas
An industrial worker presents to the dental office with bluish-green stain on the teeth.
The inhalation of which type of metallic dust form occupational exposure caused this
stain? - ANSWER-copper
approved fluoride components found in over the counter deftrifices include? - ANSWER-
sodium fluoride, stannous fluoride, and sodium monofluorophosphate
Demineralization occurs when the pH of enamel drops below 4.5-5.5. This is known as
the critical pH level? true or false on both - ANSWER-Both statements are true
Do disinfectants kill spores? - ANSWER-NO
Does fluoride have substantivity and what is it? - ANSWER-yes, which is the ability to
bind to pellicle and tooth surface and be released over a period of time with retention of
potency.
Does indicator tape always guarantee sterility? - ANSWER-NO, only spore test
Does the ADA of scientific affairs of 1994 recommend supplemental fluoride to birth to 6
months? - ANSWER-NO
Does the climate matter with fluoride concentration? - ANSWER-Yes; warmer climate-
= .7 ppm and colder climate= 1.2ppm
Does the hygienist need to polish the teeth before the application of fluoride? -
ANSWER-No, fluoride will penetrate through pellicle and plaque
During chemical sterilization, how long at what degree and pressure are used? -
ANSWER-20 min @ 270 degree F @ 20-40 lbs psi
During class 1(mesognathic) occlusal relationships, where are the teeth positioned for
molar to molar? - ANSWER-MB cusp of the max. 1st molar is in the buccal groove of
the mand. 1st molar
, During Dry sterilization, how long at what degree are used? - ANSWER-60-120 min @
320 degree F
During Steam sterilization, how long at what degree and pressure are used? -
ANSWER-20-30 min @ 250 degree F @ 15-30lb psi
how can you apply acidulated phosphate fluoride and what is it available in? -
ANSWER-tray, painting on;and available in thixotropic ( gel-like), and foams
How do ultrasonic scalers work?ca - ANSWER-through cavitation
how many times a year can you apply acciduated, and stannous fluoride? - ANSWER-1
to 2 times per year
how many times a year can you apply Fluoride varnish? - ANSWER-4 times per year
how old should you be before you start giving fluoride rinses and why? - ANSWER-
greater than 7 years because they are more likely not to swallow the fluoride rinse
how should we begin our stroke with the area specific curets? - ANSWER-begin coronal
to edge of junctional epithilium
Hydroquinone and phenidone are examples of what ? - ANSWER-Reducing Agents
if an individual ingest greater than 15 mg/kg (lethal dose), what should we do? -
ANSWER-seek medical treatment, induce vomiting, and cardiac monitoring
If an individual ingest less than 5 mg/kg of fluoride what should we do? - ANSWER-
administer fluoride-binding agents
if an individual ingest more than 5 mg/kg, what should we do (toxic dose)? - ANSWER-
induce vomiting (emesis), administer fluoride-binding agent, and seek medical treatment
If stain is located on cementum, what is the choice of removal? - ANSWER-
Instrumentation
In order what has the least to highest concentration and ppm in fluorides? - ANSWER-
Sodium (NaF), acciduated phosphate, and Stannous (SnF2)
Is a spatter invisible to the eye? - ANSWER-NO, can see it when airborne
Is aerosol invisible to the eye? - ANSWER-yes, remain in the air for a while
Is carbohydrates affected by saliva? - ANSWER-YES; it breaks them down
Is high blood pressure in African Americans very common? - ANSWER-YES
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