-
what finger is used in the finger holding method for the maxillary right molar?
left thumb
-
when using the bisecting technique foreshortening will occur if the central ray is directed perpendicular to what?
plane of the film
-
for premolar bitewings the front edge of the film should be aligned with the midline of which tooth?
mandibular canine
-
what viruses are present in oral secreations
I cytomeglovirus
II hep b
III herpes simplex
IV HIV
I, II, III, IV
-
what is the absence of pathogens or disease causing microorganisms?
asepsis
-
in dental radiography no _____ ______ are used
critical instruments
-
what is an example of a semicritical radiography instrument?
xray film holding devices
-
what kind of cleaning and disinfection should be used for the dental unit and environment?
intermediate level
-
which surfaces should be covered or disinfected
I control panel
II exposure button
III tubehead
IV PID
I, II, III, IV
-
for the preparation of supples and equipment for radiology what must be sterilized?
film holding devices
-
during film processing film is oped with _____hands and unwrapped with ____ hands
-
what angle is bisected during the bisecting technique?
angle formed by film and long axis of the tooth
-
what is the primary benefit of using the film holder with the bisecting technique?
reduces patient exposure to radiation
-
in the bitewing technique the vertical angulation is predetermined, central ray is ____ degrees to the occlusal plane
+10 degrees
-
when exposing CMRS with the bisecting techinque ____ size 2 films are used
14
-
what is the disadvantage of bisecting vs paralleling?
dimensional distortion
-
which size bitewing film is used with children with primary dentition
size 0
-
what is the exposure sequence for PA and BW
- ant PA
- posterior PA
- Bitewings last
-
when are vertical bitweings used?
looking at bone loss
-
_____ _____ is best evaluated when viewing bitewing xray
interproximal caries
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