Chapter 30

Question 2

What is imperative when using handheld x-ray devices?

Answer 2

An image receptor positioner with an alignment guide must be used because the operator must take a position in front of the unit.

Question 3

What is the correct answer regarding the statement about handheld x-ray devices?

Answer 3

C) The statement is correct, but the reason is not.

Question 4

Which technique is recommended for exposing intraoral postmortem radiographs?

Answer 4

A) Paralleling technique.

Question 5

What is necessary for film duplication?

Answer 5

D) All of the above.

Question 6

What is the exception for needing duplicate radiographs?

Answer 6

C) Soft tissue assessment.

Question 7

What is the correct order for producing duplicate films?

Answer 7

B) Remove original radiographs from mount and place on duplicator, remove duplicating film from the box and place emulsion-side down, close duplicator cover, set time, depress exposure button and process the film.

Question 8

Which extraoral radiographic image examines fractures of the condylar neck?

Answer 8

B) Reverse towne.

Question 9

Is it often difficult to use standard image receptor holders for radiographs during endodontic procedures?

Answer 9

TRUE

Question 10

Does duplicating film have double-sided emulsion?

Answer 10

FALSE

Duplicating film has single-sided emulsion.

Question 11

Do localization methods provide a way for the radiographer to read a third dimension into two-dimensional radiographs?

Answer 11

TRUE

Question 12

Is a series of radiographs on the same tooth needed to evaluate various stages of endodontic treatment?

Answer 12

TRUE

Question 13

Is the right-angle method of localization based on the shadow-casting principle?

Answer 13

FALSE

The definitive method of localization is based on the shadow-casting principles.

Question 14

Does the definitive method of localization rely on the S.L.O.B. rule?

Answer 14

FALSE

The tube shift method of localization relies on the S.L.O.B. rule.

Question 15

Can extraoral radiographs be substituted for intraoral radiographs?

Answer 15

FALSE

Although intraoral radiographs provide better resolution, extraoral radiographs may be substituted for patients who cannot or will not open their mouths.

Question 16

Do orthodontists frequently use extraoral radiographs?

Answer 16

TRUE

Question 17

Does a transcranial radiograph evaluate the maxillary, frontal, and ethmoid sinuses?

Answer 17

FALSE

A Waters radiograph evaluates the maxillary, frontal, and ethmoid sinuses.

Question 18

Is a cephalometric radiograph used to evaluate the position and orientation of the condyles?

Answer 18

FALSE

A submentovertex radiograph is used to evaluate the position and orientation of the condyles.

Question 19

Does a cephalometric radiograph image the entire skull from the side?

Answer 19

TRUE

Question 20

Is it required to record at least 8 to 10 mm below the root apex in endodontic therapy?

Answer 20

FALSE

Endodontic therapy requires at least 4 to 5 mm below the root apex be recorded.

Question 21

Can the tube shift method of localization assist with separating superimposed root canals?

Answer 21

TRUE

Question 22

Can handheld x-ray devices be used when wall-mounted dental x-ray machines are not accessible?

Answer 22

TRUE

Question 23

Should techniques be the same for wall-mounted units when using handheld x-ray devices?

Answer 23

FALSE

Radiographers should be prepared to appropriately adapt or alter techniques used with a wall-mounted dental x-ray machine.

Question 24

Can film-based radiographs be digitized?

Answer 24

TRUE

Question 25

Can utility wax or clay be used to attach a biteblock for forensic identification?

Answer 25

TRUE

Question 26

Can a radiographic examination of teeth provide a means of antemortem identification?

Answer 26

FALSE ## Footnote A radiographic examination of teeth can provide a means of postmortem identification.

Question 27

May the bisecting technique need to be used in forensic identification?

Answer 27

TRUE

Question 28

Do some extraoral imaging techniques require special equipment?

Answer 28

TRUE

Question 29

Can radiographs be exposed during endodontic therapy?

Answer 29

Yes.

Question 30

What are three methods of localization?

Answer 30

The definitive evaluation method, the right-angle method, and the tube shift method.

Question 31

What is the principle behind the tube shift method of localization?

Answer 31

If the structure appears to have moved in the same direction as the tube shift, the object is on the lingual.

Question 32

What is a duplicate radiograph?

Answer 32

An identical copy of an original radiograph.

Question 33

What is the purpose of the lateral jaw radiograph?

Answer 33

To examine the posterior regions of the mandible.

Question 34

What is a lateral cephalometric radiograph?

Answer 34

A lateral skull projection made with the patient's head stabilized in a cephalostat.

Question 35

What is the purpose of a Waters projection?

Answer 35

Images the maxillary, frontal, and ethmoid sinuses.

Question 36

Why must a radiographer take a position behind handheld x-ray devices?

Answer 36

To prevent backscatter radiation exposure.

Question 37

What is the term for images available before death for identification?

Answer 37

Antemortem radiographs.

Question 38

How to produce darker duplicate images?

Answer 38

Decrease the exposure time.