MOD700 wk 2 Thoery

The most commonly used film size for adult intraoral dentistry is size

#2

The recommended distance between the safelight and where the films are unwrapped is

4 ft

The ideal time and temperature for manual developing is

5 minutes at 68 F

F-speed dental x-ray film reduces radiation exposure to the patient by ____% compared with D-speed dental x-ray film.

60

Faster film speed would be associated with _____ silver halide crystals, a _______ emulsion, and presence of special radiosensitive dyes.

Larger;thicker

Positioning instruments in digital radiography

assist in film placement and keep the patient's fingers from being exposed

When loading an extraoral film into the cassette prior to exposure, the

procedure must be done in darkroom

the purpose of the lead foil in the dental film packet is to

protect film from back scattered radiation

The life of the processing solutions is affected by

rinsing, fixing, washing, drying not through developent

Digital radiography requires less radiation than traditional radiography because the PreviousNext

sensor is more sensitive to c-ray energy

All the following are true statements about phosphor storage plate (PSP) imaging system imaging plates except they

should be autoclaved

Fixer cutoff will result in a _____ border.

straight white

Which of the following time and temperature errors will result in reticulation of the film emulsion?

sudden temperature change between developer and water bath

All of following are true statements about storage plates used with phosphor storage plate (PSP) imaging systems except that

They utilize radio frequency transmission to transmit the image to the computer via radio waves

Which of the following statements about duplicating film is not correct?

The emulsion side of the film appears shiny

Which of the following is an extraoral film that is placed outside the mouth during dental x-ray exposure procedures?

cephalometric

When a film passes through fixer solutions before developing, the film will appear

clear

When developer solution in an automatic processor is warmer than 83° F, the processed film will appear

dark or black

The safest place to store unopened boxes of dental film is in theq

darkroom

One reason for a lighter than normal radiograph is the

developer solution weak

the silver halide crystals are located within which of the following layers of the radiographic film?

gelatin that suspends the emulsion.

The device that intensifies or increases the effect of the radiation and decreases the amount of exposure time needed when exposing an extraoral radiograph is a(n)

intensifying screen

When film emulsion interacts with x-rays, the result is

latent image

Solutions should have been changed in the processor 1 week ago. Continuing to use exhausted developer will result in ____ films.

light

Clear spots on a processed film can be caused by

motion