Calibration of dental x-ray equipment can be performed by a dentist, dental hygienist, or dental assistant.

• True

• False

Answer explanation

Calibration of dental x-ray equipment should be performed only by a qualified technician to ensure consistent x-ray machine performance.

Annual tests for dental x-ray machines can be performed by a dentist, dental hygienist or dental assistant

• True

• False

Answer explanation

Annual tests for dental x-ray machines can be performed by the dentist, dental hygienist, or dental assistant, as well as the manufacturer’s service technician.

For quality control purposes, each new box of unopened film should be tested for film freshness and fogging before it is used.

• True

• False

After processing, fresh film that has been properly stored and protected will appear _________.

• fogged

• clear with a slight blue tint

• clouded with a blue tint

• totally black

Tags

NGSS.HS-PS4-3

After performing the screen-film contact test, a wire mesh image of uniform density appears. These results indicate

• adequate film-screen contact

• inadequate film-screen contact

When functioning properly, a viewbox should emit a uniform and intense light.

• True

• False

Answer explanation

The viewbox used to evaluate radiographs should emit a uniform and subdued light.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

One of the most critical areas of quality control that requires daily monitoring is ___________.

• examination of the fluorescent bulbs inside the viewbox

• cleaning the extraoral intensifying screens

• examination of the darkroom for light-tightness

• processing of films

The coin test is used to check ___________.

• proper safelighting

• strength of the processing solutions

• film density

• beam collimation

The following must be closely monitored with manual processing techniques.

• temperature of the water bath

• levels of the processing solutions

• accuracy of the timer

• accuracy of the thermometer

• all of the answers are correct

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

On average, processing solutions should be replenished:

• once daily

• once weekly

• every 3-4 weeks

• every 8-10 weeks

• every 3-4 months