Radiology
Which of the following is the most sensitive to radiation?
a. skeletal muscle
b. mature bone
c. reproductive tissue
d. nerve tissue
Reproductive Tissue
What is the most typical lesion likely to occur due to staphylococcus?
a. pit and fissure caries
b. infective endocarditis
c. smooth-surface caries
d. abscess formation
Abscess formation
An alloy of mercury with silver, copper, tin and zinc is known as:
a. amalgam
b. sealants
c. composites
d. zinc phosphate
Amalgam
What is the optimal fluoride concentration in the water supply?
a. 0.7 ppm
b. 0.07 ppm
c. 1.0 ppm
d. 0.07-1.2 ppm
0.7 ppm is optimal
Which of the following muscles allows you to smile and laugh?
a. mentalis
b. levator anguli oris
c. zygomatic muscle
d. risorius
Zygomatic muscle
In radiography, the penumbra refers to what?
a. the area of the mouth being exposed
b. blackness of the radiograph
c. target-to-film distance
d. area of unsharpness
Area of Unsharpness
Chlorhexidine gluconate is effective because it suppresses which microorganism?
a. strep. pyogenes
b. staph. aureus
c. strep. mutans
d. strep. sanguis
Streptococcus mutans
Irreversible hydrocolloids are also known as:
a. agar
b. alginate
c. plaster
d. stone
Alginate
Which of the following require antibiotic premedication?
a. renal dialysis shunt
b. breast implants
c. stents
d. knee replacement 29 months ago
Renal dialysis shunt
Which anatomical structure converts glucose to glycogen?
a. pancreas
b. thymus
c. liver
d. small intestine
Liver
What is the earliest clinical sign of radiation overexposure?
a. mucosal sloughing
b. erythema
c. breaking of chromosome bonds
d. loss of hair
Erythema
The directed movement of white blood cells to the area of injury is called:
a. pavementing
b. chemotaxis
c. emigration
d. margination
Chemotaxis
Which liner stimulates the formation of reparative dentin?
a. calcium hydroxide
b. eugenol
c. glass ionomer
d. zinc phosphate
Calcium hydroxide
a. both false. both climates will have the same concentration
b. both true
c. false, true
d. true, false
Both false. Both climates will have the same concentration
Which of these structures is NOT located on the sphenoid bone?
a. stylomastoid foramen
b. superior orbital fissure
c. foramen ovale
d. foramen rotundum
Stylomastoid Foramen
How many impulses of radiation does an x-ray unit produce per second?
a. 90 impulses
b. 60 impulses
c. 30 impulses
d. 25 impulses
60 impulses
Which of the following is an endotoxin from a gram-negative microbe?
a. bacterial metabolites
b. capsular polysaccharides
c. lipopolysaccharides
d. cytoplasmic RNA
Lipopolysaccharides
What would you polish gold with extra-orally?
a. rouge
b. pumice
c. tin oxide
d. baking soda
Rogue
Which of the following is not a tort?
a. negligence
b. abandonment
c. battery
d. assault
Abandonment
In which tooth structure are the Korff's fibers located?
a. secondary dentin
b. mantle dentin
c. circumpulpal dentin
d. dentinal tubules
Mantle Dentin
The annual radiation maximum permissible dose for occupationally exposed workers is:
a. 0.5 mSv
b. 5 mSv
c. 50 mSv
d. 500 mSv
50 mSv
a. gram-positive, inner
b. gram-negative, inner
c. gram-negative, outer
d. gram-positive, outer
Gram-negative, outer
What is the life expectancy of a composite restoration?
a. 10 years
b. 20 years
c. 50 years
d. lifetime
10 Years
According to FDA standards, desensitizing toothpastes are those that contain __________ as an active ingredient.
a. 5% potassium chloride
b. 5% potassium nitrate
c. either 5% potassium chloride or 5% potassium nitrate
d. 3% potassium nitrate
5% potassium nitrate
The oblique ridge runs from the ______ to _______ surfaces.
a. distalocclusal to mesiolingual
b. mesiolingual to distobuccal
c. mesiobuccal to distolingual
d. distolingual to mesiobuccal
Mesiolingual to distobuccal