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DEN205 - Dental Radiography > Study Guide Week 2 > Flashcards

Study Guide Week 2 Flashcards

1
Q

What is the minimum distance the safe light needs to be when processing x-rays?

a. 10 centimeters
b. 3.4 mm
c. 4 feet
d. 5 feet

A

c. 4 feet

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2
Q

Which film processing solution has a pH level above 7 and chemically reduces the exposed area of the emulsions making it visible to the naked eye?

a. water
b. developer
c. x-radiation
d. fixer

A

b. developer

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3
Q

________ are flat, hard containers used to hold the film during exposure.

A

cassettes

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4
Q

A _________ is a lighted box that has white frosted surface so that x-rays can be viewed easily for diagnostic purposes.

A

view box

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5
Q

_________ radiographs are used to assess the patient’s skeletal structure and profile. The patient’s bony structure and soft tissues are recorded.

A

Cephalometric

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6
Q

A number of radiographs that collectively display all the teeth and surrounding structures are called a _____________.

A

full mouth survey

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7
Q

The need for radiographs to be ___________ is increasing because more patients request radiographs be sent to specialists, patients are moving to new area and there is an increase in malpractice suits.

A

duplicated

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8
Q

The 14 or 16 window mounts are used most commonly for ________ mounts.

A

periapical

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9
Q

__________ is when a film has been exposed to high temperature. The film emulsion swells, then shrinks and has tiny cracks.

A

Reticulation

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10
Q

Normally, when facing the processing tank, the developer solution is on the _____ side of the processing tank.

A

left

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11
Q

With ____________________, a series of rollers move the x-ray film through the developing compartment, and then deposits it into a tray.

A

automatic processing

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12
Q

The x-ray machines must be checked for _______ and should not be used until problem is addressed.

A

leakage

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13
Q

________________ involves following policies and procedures that will reduce the chance of a malpractice lawsuit against the dentist.

A

Risk management

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13
Q

One structure lying over another is called ___________.

A

superimposition

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14
Q

___________ are used first thing in the morning and the afternoon to stir the developer and fixer.

A

Stirring rods

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15
Q

The _________ mounting is where the depressed dot is away from the operator and the patient’s left side is on the operator’s

A

lingual

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16
Q

In order for the dental assistant to maintain infection control during the radiography procedure, any areas that were not covered with a barrier must be ____________.

A

disinfected

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17
Q

__________ radiographs are used to detect caries, bone level, and calculus. These radiographs may also examine the crestal area of the alveolar bone.

A

Bitewing

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18
Q

In the _________ technique, the central ray is directed at the imaginary line that divides the angle created by the length of the tooth and the film packet.

A

bisecting

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19
Q

__________ radiographs are used by the dentist to identify large area of the skull on one radiograph.

A

Extraoral

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20
Q

List the tissue or organ (from least sensitive to greatest sensitivity to radiation).

a. Kidney
b. Connective tissue
c. Liver
d. bone marrow
e. intestinal tract

A
  1. Kidney (least sensitive)
  2. Liver
  3. Connective tissue
  4. intestinal tract
  5. Bone marrow (greatest sensitivity)

HOW it might show up on test:
1. Kidney
5. bone marrow (greatest sensitivity)
4. intestinal tract
3. Connective tissue
2. Liver

21
Q

When manually processing x-rays in the dark room, what are the sequence of solutions?

Put these in correct order: dry, wash, rinse, development, fix, rinse

A
  1. development
  2. rinse
  3. fix
  4. rinse
  5. wash
  6. dry
22
Q

What is the name of the intraoral radiograph that shows the entire tooth and surrounding area?

A

periapical (PAs)

23
Q

What type of intra radiograph shows the crowns, interproximal spaces, and the crest area of the alveolar bone of the maxillary and mandibular teeth in occlusion?

A

bitewing

24
Q

What are the sizes of intraoral film?

A

0, 1, 2, 3, 4

25
Q

When processing films in an automatic processor, what is the sequence of the solutions?

Put these in correct order: fix, develop, dry, wash

A
  1. develop
  2. fix
  3. wash/dry
26
Q

On the dental film, what does the size of the silver halide crystals and bromine crystals in the emulsion regulate?

A

speed of film

27
Q

What is the small room called where x-ray film can be developed, fixed, and washed? This room must be light tight:

A

darkroom

28
Q

Which intraoral radiograph exposes the large anterior/arch areas of the mandible or maxilla surfaces of the dental arch?

A

occlusal film (or size 4)

29
Q

True or False:

For the bisecting technique, the film must be placed in the patient’s mouth as close to the lingual surface of the tooth as possible without bending the film.

A

True

30
Q

True or False:

The smaller the crystals in the emulsions, the faster the dental x-ray film.

A

False

31
Q

True or False:

Dental assistants in each state should inquire about the regulations on the length of time patient radiographs must be saved.

A

True

32
Q

True or False:

Many dental offices store dental film in the fridge.

A

True

33
Q

True or False:

The latent image of the film becomes visible when it has been exposed to chemicals for a period of time and at a certain temperature.

A

True

34
Q

True or False:

The developing solution used for automatic processing can also be used for manual processing.

A

False

35
Q

True or False:

The stirring rods should be marked according to the processing solution in which it will be used. The rods should not be used interchangeably.

A

True

36
Q

True or False:

If the film has not been exposed to light or radiation, it appears clear after processing.

A

True

37
Q

True or False:

During a bite-wing radiograph, when a dentist wants to see more of the tooth root and alveolar bone, the fill is placed horizontally.

A

False

38
Q

True or False:

Bitewing radiographs are usually taken on the anterior teeth.

A

False

39
Q

True or False:

If a film has been totally exposed to visible light, it appears black after processing.

A

True

40
Q

True or False:

The halide crystals that make up the emulsion for the dental x-ray film has compounds of halogen like chlorine, bromine, and iodine that combine with another element such as silver.

A

True

41
Q

True or False:

Disposal of the fixer solutions must follow OSHA hazardous waste guidelines.

A

True

42
Q

True or False:

Dental x-ray film should be stored carefully before it is used because it is sensitive to stray radiation, high temperatures, and chemicals.

A

True

43
Q

True or False:

Radiographs are the property of the patient considering the patient’s insurance company paid for them.

A

False

44
Q

What is the minimum distance an operator should stand during an x-ray exposure?

A

6 feet

45
Q

What is the best way for a dental assistant to evaluate the amount of radiation he/she/they receives?

A

To wear a film badge everywhere, at all times.

46
Q

Cells with a high reproductive rate are considered to be?

A

radiosensitive

47
Q

Film with grey appearance with an image detail that is lost and lessened contrast is considered to be:

A

fogged

48
Q

Normally automatic processing is done at temperatures between what degrees? __ & __ degrees.

A

82 & 95 degrees.

49
Q

Which solution removes the unexposed and underdeveloped crystals from the film emulsion as well as stops the developing process?

A

Fixer

50
Q

What size film is used for an adult with a narrow palette on the anterior teeth?

A

size 1

51
Q

What type of x-ray is commonly used on an adult anterior and posterior?

A

size 2

DEN205 - Dental Radiography (6 decks)

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