X
Incorrect horizontal angulation can result in
overlapping images
What is the Embossed Dot on the film used for?
to identify the back from the front of the film
Which film provides the lease amount of radiation exposure?
E speed film
What is defined as the amount of overall blackness in the radiograph?
Density
What should be used to protect the patient?
A lead apron and a thyroid collar
For which projection may the central beam be aimed b/t the 2nd premolar & the 1st molar?
premolar
Which side should the bite-wing tab project out of?
the smooth side
What is the purpose of dental x-rays?
Diagnosis
What setting yields more x-rays in the beam?
A higher mA setting
What can be aimed in a desired direction?
Visible light and x-rays
What does a higher kilovolt setting yield?
Shorter wavelength and greater penetrating power
One way to achieve higher contrast is to?
lower the kVp setting
What x-ray shows the crown, root, and supporting structures?
Periapical
Acccording to the Inverse Square Rule, to increase the intensity of the x-ray beam by 4x you must do what?
You must move source ½ the distance to the object.
What does the mA setting regulate?
The quantity of x-rays
The film should be placed parallel to what?
the long axis of the tooth
How should the patient be positioned for the full mouth survey?
sitting upright with the occlusal plane parallel to the floor
What part of the x-ray tube serves as a source for electrons?
Cathode
Where should the operator stand during exposure?
behind a barrier or away from the beam
What causes the dark area on the developed film?
X-ray striking the film
What makes high speed film safer than other film?
It allows a reduction in radiation dose
The main potential source of infection during dental x-rays is?
saliva & gingival fluid on the film
What does the kVp setting directly regulate?
Wavelegnth
What part of the body most likely to be unaffected by properly administered dental radiographs?
Gonadal tissue
ALARA stands for?
As low as reasonably achievable