Deck 1: Dental Radiography: Historical Perspective and Future Trends

Question 1

Producing radiographs of the teeth and/or the oral cavity is called:

A) Radiation producing.
B) Radiology.
C) Roentgenograph.
D) X-raying.
E) Radiography.

Answer 1

Radiography.

Question 2

The development of radiation protection as a science is credited to:

A) A. Cieszyński.
B) W. D. Coolidge.
C) W. H. Rollins.
D) F. Mouyen.

Answer 2

W. H. Rollins.

Question 3

The positioning indicating device (PID) is sometimes called a "cone" because the PID of early dental x-ray machines was of a pointed shape.

A) Both the statement and reason are correct and related.
B) Both the statement and reason are correct but NOT related.
C) The statement is correct, but the reason is NOT.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Answer 3

Both the statement and reason are correct and related.

Question 4

The parpaparalleling technique is taught in all dental assisting, dental hygiene, and dental schools because it is the technique of choice for imaging intraoral radiographs.

A) Both the statement and reason are correct and related.
B) Both the statement and reason are correct but NOT related.
C) The statement is correct, but the reason is NOT.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 5

Each of the following is an advantage of digital imaging EXCEPT one. Which one is the EXCEPTION?

A) It reduces radiation over film-based radiography.
B) It eliminates the need for the darkroom and processing chemistry.
C) It allows the use of pointed cones without radiation hazards.
D) It avoids the need for disposal of hazardous materials such as lead foils from film packets.
E) It produces enhanced two- and three-dimensional images.

Question 6

Who is credited with introducing the bitewing radiograph?

A) F. W. McCormack
B) H. R. Raper
C) G. M. Fitzgerald
D) C. E. Kells

Question 7

Who developed the hot cathode ray tube?

A) W. D. Coolidge
B) W. A. Price
C) H. R. Raper
D) W. H. Rollins

Question 8

Early researchers working in the field of radiography were not aware that continued exposure to x-rays produced accumulations of radiation effects in the body because x-rays are invisible.

A) Both the statement and reason are correct and related.
B) Both the statement and reason are correct but NOT related.
C) The statement is correct, but the reason is NOT.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 9

Who was awarded the first Nobel Prize for physics in 1901, for his experimental work with radiation?

A) W. J. Morton
B) O. Walkhoff
C) W. D. Coolidge
D) W. C. Roentgen

Question 10

Each of the following is a potential use of dental radiographs EXCEPT one. Which one is the EXCEPTION?

A) Diagnosing dental caries
B) Evaluating development of dentition
C) Detecting missing teeth
D) Assessing patient self-care
E) Evaluating trauma to teeth and supporting bone

Question 11

What New Orleans dentist first made practical use of x-rays in the treatment of dental patients?

A) H. R. Raper
B) G. M. Fitzgerald
C) F. Mouyen
D) C. E. Kells

Question 12

Which of the following is NOT true regarding cone beam volumetric imaging?

A) It images a single selected plane of tissues.
B) It is based on computed tomography.
C) It uses less radiation than a panoramic radiograph.
D) It is designed specifically for imaging dental applications.
E) It is purported to become the gold standard for imaging certain oral conditions.

Question 13

The bisecting technique was the first and earliest radiographic technique for exposing intraoral radiographs because the bisecting technique is based on the rule of isometry.

A) Both the statement and reason are correct and related.
B) Both the statement and reason are correct but NOT related.
C) The statement is correct, but the reason is NOT.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 14

What component of the dental x-ray machine best limits the size of the x-ray beam to the approximate size of the image receptor?

A) A pointed cone
B) An open round cylinder
C) A rectangular PID
D) A slit collimator

Question 15

The rule of isometry is the basis for what dental radiographic technique?

A) Bisecting
B) Paralleling
C) Panoramic
D) Digital
E) Computed tomography

Question 16

The first dental radiograph was produced using an exposure time of:

A) 0.5 second.
B) 1 minute.
C) 5 minutes.
D) 25 minutes.
E) 1 hour.

Question 17

Early dental film required long exposure times because:

A) it was hand-wrapped.
B) the emulsion was only on one side.
C) glass plates were used as the base.
D) the packets were not moisture resistant.

Question 18

The most significant advancement in the early days of radiography came in 1913 when W. D. Coolidge:

A) became the first to alert the profession of the dangers of radiation exposure and advocated for the science of radiation protection.
B) exposed a prototype of a dental radiograph, setting the stage for preventive oral health care.
C) developed a variable, high kilovoltage x-ray machine compatible with the paralleling technique.
D) introduced an x-ray tube that allowed for an x-ray output that could be predetermined and accurately controlled.

Question 19

Dental assistants and dental hygienists meet an important need by providing each of the following EXCEPT one. Which one is the EXEPTION?

A) Exposing radiographs
B) Processing radiographs
C) Mounting radiographs
D) Prescribing radiographs
E) Interpreting radiographs

Question 20

Panoramic radiology became popular in the:

A) 1930s.
B) 1940s.
C) 1950s.
D) 1960s.
E) 1970s.

Question 21

Digital imaging replaces the conventional dental x-ray machine.

Question 22

Early scientists and researchers working in the field of radiography were not aware that continued exposure produced accumulations of radiation effects in the body.

Question 23

The PID is used to direct the useful beam of radiation.

Question 24

A radiograph is an image produced by exposure to x-rays.

Question 25

Early dental x-ray machines were an electrical hazard.

Question 26

Dental x-ray film available today is coated with emulsion on both sides.

Question 27

In the early 1900s dental patients would have to be sent to hospitals or a physician's office to have a dental radiograph exposed.

Question 28

X-radiation was discovered when Roentgen was working with a Crookes tube.

Question 29

The x-radiation output of the Crookes tube (named after the English chemist William Crookes) could be predetermined and accurately controlled.

Question 30

C. Edmund Kells encouraged the practical use of radiographs in dentistry.

Question 31

The bisecting technique is the technique of choice for intraoral radiography.

Question 32

The paralleling technique is based on the rule of isometry.

Question 33

Pointed cones should be used to direct radiation from the x-ray tube to the patient.

Question 34

In the early 1900s, it was common practice for the radiographer to help the patient hold the film in place while making the exposure.

Question 35

Digital imaging systems can reduce radiation dosage more than film-based radiography.

Question 36

Dental radiography supplements visual and physical examination to provide a quality evaluation of a patient.

Question 37

Roentgen named his discovery the roentgen ray.

Question 38

Computed tomography eliminates the use of radiation to produce an image.

Question 39

The radiographer should help the patient hold the image receptor in place during exposure.

Question 40

William Herbert Rollins was awarded the first Nobel Prize for physics.

Question 41

In dental digital imaging systems, what replaces film?

Question 42

What medical imaging modality records a selected plane of tissues?

Question 43

Who first determined that x-rays would play a role in dentistry?

Question 44

What is the technique of choice for intraoral radiography?

Question 45

What are the two techniques for exposing intraoral dental radiographs?

Question 46

What is the purpose of studying the history of radiography and dental radiography?

Question 47

Who developed the hot cathode ray tube?

Question 48

Which radiograph displays the entire dentition and surrounding structures?

Question 49

What is the name of the device that functions to direct the x-ray beam toward the patient?

Question 50

Who is considered to be the first advocate for the science of radiation protection?