Radiology
The generation of x-radiation occurs
a. in the copper stem
b. in the focusing cup
c. at the tungsten target
d. at the cathode
at the Tungsten target
Dextrans are produced by
a. Neisseria
b. Schwann cells
c. adipose tissue
d. streptococcus mutans
streptococcus mutans
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
increasing the mA will cause
a. an increase in density; film appears darker
b. an increase in density; film appears lighter
c. a decrease in density; film appears darker
d. a decrease in density; film appears lighter
an increase in density; film appears darker
Which organism is MOST often linked to root caries?
a. streptococcus pyogenes
b. Porphyromonas gingivalis
c. streptococcus mutans
d. Actinomyces viscosus
Actinomyces viscosus
Irreversible hydrocolloids are also known as:
a. agar
b. alginate
c. plaster
d. stone
Alginate
OSHA is responisble for all of the following EXCEPT one... which is the exception?
a. Protecting the employer
b. Protecting the employee
c. Clinics and large facilities
d. Blood borne pathogens
Protecting the employer
where does stensen's duct open?
a. under the tongue
b. lingual foramen
c. opposite maxillary second molars
d. opposite mandibular second molars
opposite maxillary second molars
increasing kVP results in:
a. a short scale of contrast
b. a long scale of contrast
c. neither, it would have no effect
a long scale of contrast
(The higher the kVp, the more likely the x-ray beam will be able to penetrate through thicker/denser material)
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
Placing sealants on a child without parental permission is an example of :
a. Assault
b. Battery
c. Misrepresentation
d. Non-malefeasance
Assault
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?
What would you polish gold and amalgam with intra- orally?
a. rouge only
b. rouge/tin oxide
c. tin oxide only
d. rogue/ pumice
b. Rogue extra-orally , tin oxide intra- orally
Which of the following is not a tort?
a. negligence
b. abandonment
c. battery
d. assault
Abandonment
which of the following artiers carries deoxygenated blood?
a. renal
b. aorta
c. hepatic
d. pulmonary
pulmonary
The proper thickness of the lead lining in a radiographic lead apron is...
a. 0.5 mm equivalent
b. 0.1 mm equivalent
c. 0.25 mm equivalent
d. 2.5 mm equivalent
0.25 mm equivalent
most disease causing organisms are:
a. gram-positive rods
b. gram-negative rods
c. gram-negative cocci
d. gram-positive cocci
Gram-negative rods
the setting time of gypsum could be shortened by:
a. excessive mixing
b. mixing with less water
c. adding potassium sulfate
d. all of the above
all of the above
Which is an example of a non intention tort
a. Assault
b. Battery
c. Negligence
d. Defamation
e. Misrepresentation
Negligence
the nasopalatine nerve enters the oral cavity by way of the
a. lesser palatine
b. mental foramen
c. incisive foramen
d. pterygopalatine foramen
incisive foramen