Chapter 21, 22, 23 review

In placing a periapical radiograph, how may inches over the occlusal/incisal edge should the film packet be placed?

1/8

Occlusal radiographs may be taken to view which of the following?

2,3,5 2.Supernumerary teeth 3.Cysts 5.Impacted teeth

Sensor/image plates for digital imaging can come in which of the following sizes and designs?

2,4,6,7 2.panormaic 4.Cephalometric 6. Full sized "0" x-ray 7.full sized "2" x-ray

Sensor/image plates for digital imaging can come in which of the following sizes and designs?

2. Panoramic 4. Panoramic 6.full sized "0" x-ray 7.full sized "2" x-ray

The computer monitor can display over ____ shades of gray, but the human eye can detect only ___ shades of gray.

200 , 32

The tissue/organs most sensitive to radiation include

3,4 3.Bone marrow 4.Reproductive cell

which of the following are intervals of taking radiographs for routine dental exams?

6 months 12months

When a conventional x-ray machine is used with digital radiography, the x-ray machine should be capable of producing ___ kV

70

The temperature for automatic processing is around ___ degrees.

90

The effects of radiation are

Accumulative

A dosimeter badge should be worn

At all times in the dental office

the safelight is of _____ spectrum.

Blue-green

Movement by the patient's head or the tubehead results in

Blurred image

The ____ is one of the most widely used image receptors in dental digital radiology

CCD

The molybdenum focusing cup is on which side of the x-ray tube?

Cathode

The radiograph used to asses the patient's skeletal profile and structure is

Cephalometric

A film not exposed to radiation results in

Clear film

Milliamperage seconds determine the amount of radiation exposure the patient receives. The difference between the shades of gray is the

Contrast

Streaks on film are a result of

Dirty rollers on an automatic processor Dirty processing racks

The area on the tungsten target where the electrons hit is the

Focal spot

In the developing solution, which chemical blackens the exposed silver halide crystals?

Hydroquinone

The dental film that reduces radiation exposure up to 20 percent is the

Kodak insight F-speed

The time between the exposure and the development of biological effects is the _____ period.

Latent

which dental specialty routinely uses the cephalometric radiograph?

Orthodontics

Incorrect horizontal angulation results in

Overlapping

In the paralleling technique, the film packet must be

Parallel to the long axis of the tooth

which dental specialist would be the most likely to ask for vertical bitewing

Periodontics

In the bisecting angle exposure technique, the central beam must be

Perpendicular to the bisecting line

Extraoral cassettes are usually lined with

Phosphors intensifying screens

which of the following will the bitewing radiograph cover

Premolars area molar area

The experiment with a cathode ray tube called the Hittorf-Crookes tube was used to discover which of the following?

X-ray

X-ray film is sensitive to

all of above

Bitewing will detect which of the following?

all of the above

Duplication of a radiograph requires

all of the above

The lead apron with the thyroid collar should be used for

all of the above

which observations should be made of a child's mouth before placing films.

all of the above

Another name for the lead diaphragm is the

collimator

If the beam missed part of the film, the result is

cone cutting

In regard of the size of crystals in the emulsion, the larger the crystal the

faster the film

The dental film that has the highest speed for the greatest reduction in radiation exposure for the patient is the

insight

What determines the quality of radiation?

kilovoltage

When mounting films the term used when placing the dot towards the operator is called

labial mounting

kidney, muscle, nerves

least sensitive

mature bone, salivary glands, thyroid, liver

less sensitive

skin, intestinal tract, oral mucosa

moderately sensitive

lymphoid, reproductive cells, bone marrow, intestinal epithelium

most sensitive

child film

no.0

narrow anterior film

no.1

adult film

no.2

long bitewing film

no.3

occlusal film

no.4

The dental specialists who routinely use extraoral radiographs are

oral surgeons and orthodontists

connective tissue, growing bone

sensitive

the size of narrow anterior film is

1

Panoramic radiographs give the dentist a view of

1 2 3 4 5

Light film image is a result of

Underexposure underdeveloping

In which position should the patient be placed for a bitewing radiograph?

Upright

The inventor of x-ray is

Roentgen

The radiation that is deflected from its path as it strikes matter is ____ radiation.

Scatter

Which statement equals more energy?

Short wavelength with high frequency