A technique used to measure the operators exposure to radiation...
To avoid exposure to secondary radiation, the operator should stand
The xray at the center of the xray beam is called the
The difference in density in various regions of a radiograph is called
Blurred films can result from
The most sensitive cells to ionizing radiation are
Scatter radiation is a type of
The portion of the target that is struck by electrons is called...
Film fog can occur if there is
Collimation of the primary beam
The cathode is a filament composed of
If a patient expresses concern about the hazard of radiation, the...
The radiographic film is covered with an emulsion of
The usual number of filmsin a complete dental radiographic survey...
Which of the follwoing is used to describe the blackness of an exposed...
The first sign of xray dermatitus is
After each use the leaded apron must be
The amount of radiation a person recieves
Xrays are mose effectively stopped by
The operator must avoid all of the following EXCEPT
The lead diaphragm determines the size and shape of the
The best type of xray to penetrate body tissue is
If patient is reluctant to be radiographed, the auxillary should
The most effective way to reduce gonadel exposure from xrays is...
The best technique for reducing the radiation exposure to both patient...
If the end of the xray cone approximates the tip of the patients nose,...
The periapical film reveals
The detection of interproximal carries is best seen by a
Accumulated radiation dosage for those who work with radiation may not...
To increase the penetrating power of an xray beam, the auxiliary must
The basic principle of bisenting the angle technique is
A material or substance that does stop or absorb xrays is known...
Exposure of a radiograph on a child
The raised button on the radiograph aids in
Two films are developed for the same length of time but at different...
In the paralleling technique, a device used to hold the film in the...
The quality, or penetrating power, of secondary radiation is
Cephalometric radiographs are used in which area of dentistry
Extraoral films are placed in rigid frames called
Black lines across the film may be the result of
When exposing the patient to only one periapical radiograph, the...
Proper collimation for the film size and target-film distance...
The developing solution
The best way to dry processed film manually is to
The optimum time-temperature relationship for processing dental...
The time period between the effects of cumulative radiation and...
The temperature of the radiographic processing solutions is adjusted...
A panorex film that exhibits distortion in the region and is lighter...
Which of these is not a factor when considering what size film to use?
If the mA is increased while the kVp adnd exposure time are kept...
Which extraoral film is used to visualize the sinus?
All of the tissues listed are radiopaque EXCEPT
X-ray films should be kept by the dentist along with other records for
Film speed is determined by the
Filtration of the xray beam protects the patient by
The side of the nose is called the
The fixing solution is
Intensifying screens
For maximum penetration of xrays, which of the following combinations...
The housing of the xray tube is
Reticulation is
The chemicals used in processing solutions are dissolved in
Which of these appears radiolucent?
What is the long, narrow, and radiolucent area visible below the roots...
Maximum protection of the patient requires that the xray beam pass...
If a film is exposed on the wrong side, the result will be
A material or substance that does not stop or absorb xrays is known...
A dental assistant may expose radiographs
Vertical angulation in the bisecting technique for the same radiograph...
If a radiograph remains in the developing solution too long, the film...
Foreshortening is caused by
Xrays are made up of
Fixing the film
The size of the collimated beam for intraoral radiology measured at...
The occlusal plane of the maxillary arch being radiographed should...
Appropriate infection control procedures during xray exposure should...
The thermometer used to measure the temperature of the processing...
Cone cutting results from
Which characteristics of xrays make them both beneficial and...
How often should the processing solutions be changed?
Periapical firlms should extend beyond the occlusal plane
Interproximal film may show all of the following except
What term describes the U-shaped radiopaque structure often seen in...
What is the thin radiopaque band between the maxillary incisors...
During processing, when can radiographs safely be exposed to light?
As the target-film distance is increased, the
Which of these structures is radiopaque?
Films not fixed for a long enough period of time will appear
A latent image is
Extraoral films are
If a properly processed film is left overnight in the water it...
After the films are removed from from the fixer, they are washed for
The basic principle of the paralleling technique are all of the...
What is the radiopaque circular area below the apices of the...
A processed film reveals small white spots, indicating incomplete...
What is the small circular radiolucency near the roots of the...
If an unexposed film is processed, it will appear
A logical sequence for a full mouth survey of a patient with a...
What term describes the heavily radiopaque midpoint of the mandible?
What is the small circular radiolucency below the mandibular incisor...
For the developing solutions to work, the solution must be
The strength of the safelight permitted in the dark room depends on...
Elongation is caused by
After a film is exposed, the target-film distance is doubled....
The dental auxillary is asked to change the 8-inch shortcone to the...
When taking a full mouth series of intraoral xrays the sagittal plane...
The best sequence for exposing maxillary radiographs is
Firm placement of the film will help prevent
Milliamperage controls
The purpose of the lead foil in dental film is to
Film is washed after removing it from the developing solution to
Films left overnight in the fixer
Which of these appears radiolucent?
The ala-tragus line is parallel to the floor when taking
What is the name of the diagonal radiopaque line visible at the lower...
A patient with an extemely narrow maxillary arch presents placement...
To visualize the two roots on the maxillary premolar, the central ray...
The dentists new xray machine has inherent filtration of 2 mm of...
What is the large radiolucent area shown on maxillary molar...
Radiographs of edentulous portions of a patients mouth
The principle used in panoramic radiography is