What is the difference between a bite wing and a periapical image
bitewing image - shows the upper and lower teeth in occlusion.
periapical image - shows the entire tooth from occlusal surface or incisal edge to about 2 to 3 mm beyond the apex.
What are two techniques that can be used for exposing images
Bisecting and parallel technique
Why is an exposure sequence important
without a planned exposure sequence, you are more likely to omit an area or to expose the same area twice
When exposing images, in which area of the mouth should you begin
Maxillary anterior right
Which projection should be the first for posterior exposures
Premolar
Why is it not recommended to have the patient hold the film or sensor during exposure
Unnecessary radiation
What type of film or sensor holders can be used in the bisecting technique
EeZee - grip holder
What error occurs when the horizontal angulation is incorrect
Overlapped or unopened contact areas
What two error occurs when the horizontal angulation is incorrect
enlongated or foreshortened images
In the bisecting technique, how is the film or sensor placed in relation to the teeth
close to the crowns of the teeth
What is the purpose of bitewing images
to detect interproximal caries and exam crestal bone level between teeth
What horizontal angulation should be used for bitewing images
+10
What size film is used for adults in the occlusal technique
4#
When are occlusal radiographs indicated
To show a wide view of the arch of the upper and lower jaws
What physical disabilities may affect dental patients
vision, hearing, and mobility
Under what circumstances would you hold a film sensor for a patient
None
For partially edentulous patients, how can you modify the technique for using a bite-block
With a cotton roll
When exposing images on a pediatric patient, how can you best deceive the tube head for the patient
as a camera
What changed must be made in exposure factors when one is exposing dental images on a pediatric patient
milliamperage, kilovoltage, and exposure time
What size of film is recommended for a pediatric patient with all primary dentition
#0
Why is the exposure sequence especially important when one is taking x-rags on a patient with a severe gag reflex
in preventing gag reflex and keep track of expose areas
What is the definition of a diagnostic-quality image
those that have been properly placed, exposed, and processed
When mounting radiographs, what is the ADA's recommendation concerning placement of the raised dog
to use the labial method with the dot facing up
Why is it important for the dental assistant to recognize an anatomic landmarks
to mount dental radiographs correctly
Why is it important to avoid retakes
to prevent additional exposure of the patient to ionizing radiation