272 Chapter 1 Radiation History

History of dental radiography events

(earliest to latest) First Dental radiograph First Dental x-ray Machine Introduction to the Bitewing technique Introduction of panoramic radiology Introduction of D-speed film Introduction of intraoral digital imaging Introduction of cone beam computed tomography (CBCT) Introduction of F-speed film Cone beam scanners available in United States

Uses of dental images

1. Detection is one of the most important uses clinical of dental images 2. Dental images are used to detect lesions, diseases, and conditions of the teeth and surrounding structures that cannot be identified clinically 3. Dental images are used to confirm or classify suspected disease 4. Dental images are used to localize lesions or foreign objects 5. Dental images are used to provide information during Dental procedures 6. Dental images are used to evaluate growth, and development 7. Dental images are used to illustrate changes secondary to caries, periodontal disease, and trauma 8. Dental images are used to document the condition of a patient at a specific point in time 9. Dental images are used to aid in the development of a clinical treatment plan.

x-rays were discovered in the year?

1895

Dental Radiographer

: Any person who positions, exposes and processes x-ray film

X-ray

A beam of energy that has the power to penetrate substances and record image shadows on pano graphic film.

X-ray:

A beam of energy that has the power to penetrate substances and record image shadows on photographic film.

Dental Radiograph:

A panograhic image produced on film by the passage of x-rays through teeth and related structures.

Coolidge -

Developed first x-ray tube

Roentgen -

Discovered x-rays

Radiation

Energy carried by waves or streams of particles

Walkhoff

Exposed first dental radiograph

Kells

Exposed first dental radiograph in United States (living patient)

Morton

Exposed the first dental radiograph in United States (skull)

Describe the history of x-ray film

From 1896 - 1913 dental x-ray packets consisted of glass photographic plates or film cut into small pieces and hands wrapped in black paper and rubber. Since then films have improved and require a short exposure time which reduces the patient's exposure to radiation.

X-radiation:

High energy radiation produced by the collision of a beam of electrons with a metal target in an x-ray tube.

What is the importance of dental images?

In dentistry dental images enable the dental professional to identify many condition that may otherwise go undetected and to see conditions that cannot be identified clinically

Price -

Introduced bisecting technique

Fitzgerald

Introduced long-cone paralleling technique

Radiology:

Radiology is the science of study of radiation as used in medicine, a branch of medical science that deals with the use of x-rays, radioactive substances, and other forms of radiant energy in the diagnosis and treatment of disease.

Radiography:

The art and science of making radiographs by the exposure of film to x-rays

Dental Radiography:

The production of radiographs of the teeth and adjacent structures by the exposure of film to x-rays

Radiograph:

This is a picture (visible photographic record) on film or a receptor produced by the passage of x-rays through an object or body; also called x-ray film, in practice, often called and x-ray, this is not correct. A two dimensional representation of a three dimensional object.

McCormack -

Used Paralleling technique in practical dental radiography

Who discovered x-rays?

Wilhelm Conrad Rontgen

Summarize the discovery of radiation

Wilhelm Conrad Rontgen (1895) : Rontgen was experimenting with vacuum tubes and fluorescent screen. He noticed the screens were glowing even though they were several feet from the tube. He determined that some mysterious ray was causing the screens to glow.

Raper

Wrote first dental text; introduced bitewing technique

Rollins

Wrote first paper on the danger of x-radiation