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Dental Assisting > Module 6 Final > Flashcards

Module 6 Final Flashcards

0
Q

____ took the first intraoral radiograph.

A

Walkhoff

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1
Q

_____ was a professor of physics, and discovered X-rays.

A

Roentgen

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2
Q

The open-ended tube, commonly referred to as the cone is called the:

A

Position Indicator Device (PID)

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3
Q

The ____ is a negative electrode that produces electrons.

A

Cathode

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4
Q

The sharpness or definition of the radiograph is determined by the:

A

Focal Spot

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5
Q

Radiation trauma that causes changes to the ____ cells will affect future generations in anomalies or birth defects.

A

Genetic

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6
Q

The dose to which the body tissues are exposed, measured in terms of its estimated biological effects, is the:

A

Sv.

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7
Q

the portion of the primary beam that is limited by the collimator inside the position indicating device is known as the:

A

Useful Beam

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8
Q

The aluminum material that is placed in the path of the beam of radiation to remive many soft rays or longer wavelengths that are undesirable is the:

A

Filter

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9
Q

The recommended postion for the operator during x-radiation exposure is:

A

Behind a leaded door at a distance of at least 6 feet from the central beam.

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10
Q

____ is the most common setting for the milliamperage.

A

10-15 mA

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11
Q

____ is the setting on the control panel that regulates the force with which the electrons move across the tube gap.

A

Kilovoltage (kVp)

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12
Q

if the operator increases the exposure time, the film will appear:

A

Darker.

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13
Q

There are several tyes of film holders available, including Styrofoam, Stabe bite-block, ____, EEZEE grip, Uni- BIte, and EndoRay.

A

XCP

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14
Q

The type of film placed directly into the mouth for exposure is called a/n ____ film.

A

Intraoral

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15
Q

The two most common extraoral films used to investigate the jaws and skull are the cephalometric and the ____ film.

A

Panoramic

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16
Q

The fastest speed film is:

A

F-speed.

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17
Q

The safe light within the dark room must be at least ____ feet away from the working surface during film processing.

A

Four

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18
Q

The floaating-type thermometer is placed in the ____, and should be periodocally checked for radiographic processing.

A

Developer

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19
Q

The chemicals used to process films should be changed approximately every ____ weeks.

A

3-4

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20
Q

The processing tanks must have a/n ____ to prevent the film from light exposure, oxidation, and evaporation of chemicals.

A

Metal lid

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21
Q

When processing film at higher temperatures, the developing time is:

A

Decreased.

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22
Q

Dark films are the result of:

A

overdeveloping and overexposing.

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23
Q

Too short a fixing time can result in:

A

Partial loss of the image.

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24
Q

When the developing solution becomes exhausted, processed films appear:

A

Light.

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25
Q

All dental x-ray equipment made after 1974 is required by federal regulations to meet safety standards for minimum filtration and x-ray equipment control settings. The three settings required for inspection are ____, mA, and time.

A

kVp

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26
Q

Federal legislation requires dental auxilliaries who will be exposed to radiography to:

A

Successfully pass a radiology course as required by the individual’s State Board of Dentistry.

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27
Q

Exposed radiographs:

A

Are opened without touching hte contaminated dental film with ungloved hands.

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28
Q

Film holding devices and alignment devices are classified as ____ instruments, and must be sterilized.

A

Semi-critical

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29
Q

The American Academy of Oral and Maxillofacial Radiology recommends the ____ technique for intraoral dental radiographs.

A

Parallelling

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30
Q

Foreshortening of the film is due to ____ of the PID.

A

Too much veritcal angulation.

31
Q

Overlapping is caused by an error in ____.

A

Horizontal angulation

32
Q

The number of films that comprise an adult full-mouth series (FMX):

A

18-20.

33
Q

The intraoral film used to show desired teeth, their apices, and surrounding areas are called ____ films.

A

Periapical

34
Q

The intraoral x-ray films used to show the interproximal teeth are called ____ films.

A

Bitewing

35
Q

The guiding principle in dental radiography is known as ALARA. ALARA stands for:

A

As low as reasonably achievable.

36
Q

During application of the parallel technique the aiming ring of the film-holding instrument should align ____ to the PID.

A

Parallel

37
Q

The use of a cotton roll on the anterior bite-block will keep the tooth and film ____ to each other.

A

Vertical

38
Q

What quadrants require the same assemble for posterior setup of the XCP?

A

Maxillary left and mandibular right.

39
Q

The embossed dot on the film is used when ____ intraoral radiographs.

A

Mounting

40
Q

The embossed dot should always be placed toward the ____ sirface when inserted into the bite-block.

A

Occlusal

41
Q

When taking mandibular and bitewing films, the dental assistant must have the patient lift her ____ so that the lower border of the film packet is directly lingual.

A

Tongue

42
Q

The film size used when taking a full mouth series of x-rays on an adult patient:

A

Size 2

43
Q

For taking a maxillary premolar, the film is centered on the second premolar and parallel with the tooth’s ____, and overlapping the distal contact of the cuspid.

A

Long axis

44
Q

In the bisecting angle technique, the PID and x-ray beam are directed ____ to the imaginary plane that dissects a triangle created by the long axis of the tooth and film.

A

Perpendicular

45
Q

In positioning the patient for the maxillary arch, the dental assistant must have the ala-tragus line or the ____ horizontal and parallel to the floor.

A

Frankfort plane

46
Q

The film that produces radiographs that show the coronal portion of the teeth is called:

A

Bitewing.

47
Q

In taking a bitewing radiograph without an alignment device, the dental assistant ensures that the ala-tragus line is parallel with the floor and the mid-sagittal plane is ____ to the floor.

A

Perpendicular

48
Q

When taking an occlusal radiograph, the “dot upside” of the film is faced ____ toward the arch being examined.

A

Toward

49
Q

When taking a periapical endodontic film, the dental assistant may have the patient hold the film with:

A

A hemostat.

50
Q

When the periapical film is placed backwards in the patients mouth, ____ would be exposed on the diagnostic film.

A

A herringbone pattern

51
Q

When mounting radiographs the films to be mounted are divided into three groups: maxillary periapicals, ____.

A

Bitewings, and mandibular periapicals.

52
Q

A technique utilized to expose a radiographic image of a curved layer with a narrow beam of x-rays is known as:

A

Rotational panoramic radiography.

53
Q

The size film 5x12 is an example of a ____ extraoral radiograph.

A

Panoramic

54
Q

A film-holding device for panoramic films is the:

A

Rigid or flexible cassette.

55
Q

There are four anatomical planes used to position patients in the panoramic unit: the midsagittal plane, the ala-tragus line, the anteroposterior plane, and the:

A

Frankfort plane.

56
Q

The line that is utilized as a positioning guide during panoramic radiography is known as the ____ plane.

A

Frankfort

57
Q

The ____ is a horizontal line from the upper margin of the ear to the lower margin of the eye orbit.

A

Frankfort plane.

58
Q

For a panoramic radiograph, the lead apron is placed:

A

To completely cover the front and back of the patient.

59
Q

The ____ runs from the winged flare of the nostril to the opening of the ear.

A

Ala-tragus line

60
Q

The ____ is a forward-backward plane aligned with a specific landmark on the panoramic unit.

A

Anteroposterior plane

61
Q

A common error in panoramic radiography is due to:

A

All of the above

62
Q

When taking a panoramic radiograph on an obese patient, the kV or mA exposure should be set to the next ____ setting.

A

Highest

63
Q

When positioning the patient for a panoramic radiograph, the following items should be removed from the patient:

A

Eyewear, metalwear above the shoulders, dentures, and removal appliances.

64
Q

A ____ view is an excellent radiograph for viewing the body and ramus of the mandible.

A

Lateral oblique

65
Q

An extraoral radiograohy used to view the profile of the skull is called a ____ radiograph.

A

Cephalometric

66
Q

When obtaining a Waters Skull view, the patient’s chin is touching the cassette and the nose is positioned about ____ inches from the film cassette.

A

.75

67
Q

The Townes Skull view is utilized for mandibular ____ assesment.

A

Condyles

68
Q

The image that does NOT expose the patient to radiation, and is best to diagnose soft tissue conditions of the TMJ, is ____.

A

MRI

69
Q

A filmless radiographic image system utilized in dentistry includes components such as a/n:

A

All of the above

70
Q

There are three styles of digital radiography used today: digital scanners, phosphor plates, and:

A

Direct sensors.

71
Q

____ is defined as a digital image viewed on a computer monitor.

A

Direct digital imaging

72
Q

A drum is placed into a ____ to digitalize an image on the computer screen.

A

Laser scanner

73
Q

Digital panoramic systems include patient-positioning chin rest; bite piece; ear supports; adjustable forehead and nose support; and ____ light beams.

A

Frankfort plane

74
Q

When preparing to expose a panoramic radiograph, proper positioning principles include the following:

A

Machine preparation, patient preparation, and patient positioning

Dental Assisting (13 decks)

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