Chapter 1: Historical Perspective and Future Trends of Dental Radiology

Bertha's hand

The first radiograph was in image of what?

a

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 the reason are correct and related

b. Both the statement are the 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

d

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.

d

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

c

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

d

Panoramic radiology became popular in the...

a. 1930s

b. 1940s

c. 1950s

d. 1960s

e. 1970s

b

Which of the following is not true regarding cone beam volumetric imaging (CBVI)?

a. It images a single selected plane of tissues

b. It uses less radiation than a panoramic radiograph

c. It is designed specifically for dental imaging applications

d. It is purported to become the gold standard for imaging in certain oral conditions

b

Early dental film required long exposure times because...

a. it was had wrapped

b. the emulsion was only on one side

c. glass plates were used as the base

d. the packets were not moisture resistant

c

Each of the following is an advantage of digital imaging except one. Which one is the exception?

a. It reduces radiation over film-based radiology

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 and film packets

b

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

b

Which radiographic technique is less complicated and produces better quality radiographic images?

a. Bisecting

b. Paralleling

c. Panoramic

d. Digital

E. Computed technology

a

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

a. Bisecting

b. Paralleling

c. Panoramic

d. Digital

e. Computed tomography

d

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

e

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

a. radiation producing

b. radiology

c. roentgenograph

d. x-raying

e. radiography

d

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

a. Exposing radiographs

b. Processing radiographs

c. Mounting radiographs

d. Prescribing radiographs

e. Evaluate radiographs

a

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 the reason are correct and related

b. Both the statement and the 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

d

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

A) C. E. Kells

B) O. Walkhoff

C) W. D. Coolidge

D) W. C. Roentgen

d

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