Dental Radiography

Who discovered x-rays

Original radiographs are property of?

Radiographic imaging technique that images an isolated "slice" of tissue while blurring out other structures

Produced when high speed electrons are stopped or slowed down by the tungsten atoms of the dental x-ray tube

5 Major components of the x-ray machine

Shadow casting principles (list 5)

Greek name for periapical?

legal dose of radiation?

Film that is placed in the oral cavity for exposure?

Designed for use outside the mouth?

Radiographer have patient hold the film? true/false

Developer contains hydroquinone and Elon? true/false

Bitewing does not capture crown to root tip? true/false

During a PA film packet should be facing?

Paralleling technique is the preferred technique? true/false

Processing chemicals cannot be used indefinitely? true/false

X-rays travel at the speed of sound? true/false

Electricity is defined as electrons in motion? true/false

A small focal spot reduces the size of the penumbra? true/false

The film should be enclosed physical contact with the intensifying screen? true/false

Often called Compton scattering, is similar to the photoelectric effect in that the dental x-ray interacts with an orbital electron and ejects it?

Amounts for about 60% of the interactions of matter with the dental x-ray beam?

Increasing the dose of radiation is the recommended method to make up for weak processing? true/false

Only use standard protocol if patient is infected? true/false

Life of processing solutions can be extended by replenishing? true/false

Distortion of the radiographic image in which the tooth structures appear longer than the anatomical size; often caused by insufficient vertical angulation of the central beam?

Distortion of the radiographic image in which the tooth structures appear shorter than their actual anatomical size; most often caused by excessive vertical angulation of the central beam?

Laws vary from state to state on what DA can do with x-rays? true/false

Image the apices of the teeth and the surrounding bone (the entire tooth, including the root end and surrounding bone)?

Size 2 film is most popular for PA's (size 1 is acceptable)? true/false

Shows whole mouth and surrounding structures (entire view)?

Name of device that directs beam towards the patient?

What is the speed of a wave called?

Wavelengths used in diagnostic dental radiography range from 0.1 to 0.5 A; radiation with great penetrating power?

Is the yoke in the extension arm insulated? Y/N

Measures the number of electrons that move through a conductor; unit of quantity of electric current?

What is radiographic density?

What is penumbra?

Can radiation cause changes to genetic material of cells? Y/N

Bisecting technique or paralleling technique?

Absorbing material, usually aluminum, placed in the path of the beam of radiation to remove a high percentage of low energy (longer wavelength) x-rays?

The invisible image produced when the  film is exposed to x-ray photons; during radiation exposure x-rays strike and ionize some, but not all, of the silver halide crystals?

What is placed in the film package to absorb scatter radiation?

What size of the film faces the radiographer?

Name the 4 components of the dental x-ray film?

Which processing solution prevents further film development?

PPE? (4)

All patients have the legal right to make choices about the health care they receive; includes the right to refuse treatment?

What are the units used to describe the angulation?

How many films are used in a full mouth?