DA Final

What item of the x-ray unit restricts the radiation beam to 2.75'' at the end of the cone?

A collimator

Which of the following describes the use of a filter in a dental tube head?

A filter removes low energy x-rays

Weak radiation leaving the tube during exposure is prevented by use of a/an

Aluminum filter

Immediate reaction of the immune system to attack the foreign agent just administrated to the body is called

Anaphylactic shock

Nitroglycerin is administrated to a patient with

Angina Pretoris

Interproximal, or cavity detecting radiographs are

BWX's

Which of the following is the true of radiation monitoring badges?

Badges should be worn at waist level when exposing x-ray receptors

The following films are used to examine the crowns of both maxillary and mandibular teeth on one film

Bite wing

What method uses a computer sensor replaced in the mouth and provides instant image on the screen

Direct digital imaging

Which of the following are considered radiation protection for the operator during patient exposure:

Distance of 6-8 feet from primary beam

Where should the dot be placed one taking a bite me

Dot placement does not matter

What is the key to preventing future lawsuits for treatment provided an emergency situation

Efficient and complete record keeping

What is the negatively charged particle that is responsible for producing dental radiographs?

Electron

An incorrect vertical angle of the PID causes

Elongation

Which of the following describes the primary use of the bitewing radiograph

Examination of the interproximal areas of the team

All of the following would be considered an advantage for direct digital imaging except

Expensive to initiate

Any leaks of white light into the dark room will cause

Film fogging

The amount of radiation exposure an individual receives varies on

Film speed

the speed of electrons through a circuit is referred to as

Kilovoltage

The head position on a panoramic unit consists of

Lateral head supports, bite block, chin rest

What type of radiation can be controlled and eliminated

Leakage radiation

The instrument from the XCP kit that allows the operator to align the PID (Cone) at a right angle to the film and long axis of the tooth is the

Metal indicator rod

The amount of electrons needed to produce a diagnostic film is referred to as

Milliamperes

The cathode is the

Negative terminal

What causes a cone cut

Not aligning the center of the cone to the center of the film

Which of the following is an intra oral fim

Occlusal

Which of the following is not an extra oral film

Occlusal

How often should the processing tank be cleaned?

Once per week

An incorrect horizontal angle of the PID causes

Overlapping

Which type of x-ray shows the upper and lower arch is in one continuous film

Panoramic

All of the following may be photographs taken except

Panoramic view

Purpose of the lead foil in the backside of a film packet is to

Prevent secondary radiation from fogging film

The beam of radiation which is responsible for exposing the X-ray film is the

Primary/Direct Radiation

The value of radiographs for patient education could include

Results of missing teeth, implants/bridges from restoring mouth, orthodontics conditions

Which of the following definitions is incorrect

Right angle: formed by two parallel lines

What method would be used by an office when they are converting from conventional to digital

Scanning

Radiopaque means

Shows white on a film

The following substance found in the emulsion of a film is responsible for an x-ray image

Silver halide (nitrate) crystals

Which of the following film sizes is known as the standard film

Size 2

The purpose of the fixer is to

Stop action of the developer

And AED should be used for treatment of

Sudden cardiac arrest

What is the most common in least life-threatening emergency in the dental office

Syncope

Intro oral camera has been one of the best tools in the dental office for

Temperature acceptance, insurance billing, patient education

An ion is

That has lost and electron

The identification on the intra oral film is significant because

The dot indicates the pt right or left, the dot determines film orientation, the dot is important in film mounting

A periapical x-ray shows

The entire tooth and surrounding tissues

Insulin is

The hormone responsible for observing sugar into the cells for energy

When mounting an upper bicuspid film, a good anatomical landmark to look for would be

The maxillary sinuses

Foreshortening of an image occurs when the PID is at

Too high a vertical angle

Spirits of ammonia is used to

Treat syncope (fainting)

Which type of holder is used for the paralleling technique?

XCP kit

Density means

Difference between black, white and shades of gray

What is the occupational dose limits for radiation exposure in a calendar quarter (13 weeks) for the whole body

1.25 rems

A full mouth x-ray survey on an edentulous patient consists of

14 PA's

A full mouth x-ray survey includes:

18 films (14 PA's and 4 BWX)

The minimum allowable distance of the darkroom safety light from the working countertop is

4 feet

How does the temperature of the processing solutions affect the x-ray film

Cause the films to develop slower and faster

The material responsible for giving suppo t and stiffness to the x-ray film is called

Cellulose acetate

When taking x-rays on someone who is missing teeth what can we use to support the x-ray film holders

Cotton rolls

Use of faster speed x-ray film would help to protect the patient from exposure by allowing the operator to ___________ the exposure time

Decrease

Distortion means

Degree of darkness on a film

The degree of thickness of an object which affects the overall degree of darkening of an exposed film is referred to as

Density

Future generations are termed

Genetic effects

Reticulation on a film is a processing error caused by excessive

Heat

Tightness in the chest, feeling of suffocation and fast breathing are symptoms of

Hyperventilation

Which medical emergency can be treated with glucose gel

Hypoglycemia

Process films that turn brown and this color every three days for the results of

Improper washing

What would be considered a disadvantage to using digital x-rays

Infection control

Hyperventilation may be treated by

Instructed the patient to breathe into cupped hands or brown paper bag

Reasons for taking x-rays on an edentulous patient include which of the following

Insurance verification, check bone level, to ensure all teeth and roots have been removed

Dental receptors placed inside the mouth are termed

Intraoral

Radiation is considered harmful because it

Is cumulative

Besides gamma rays, what additional radiation wave from the EMR spectrum is considered harmful to tissue due to its wavelength?

Ultra violet

Radiation protection for the patient would include

Use of lead apron

The part of the X-ray machine that produces the radiation is

Vacuum tube

What part of the intro oral camera is placed in the patient's mouth

Wand

After removing an exposed film from the patients mouth the first thing you should do is

Wipe off the saliva from the film