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Dental X-ray 2023-24
Study Guide Sheets
| Term | Definition |
|---|---|
| Density of Silver restorations | Metal substances such as amalgam restorations stop all x-ray that hit them, and because none of those rays reach the film, the film appears white. |
| Oral cavity that are "radiolucent" are | Substances that are much less dense than metal, such as muscle, blood, or other soft tissues, do not stop the passage of x-ray, and when radiographed, they result in blackened areas on the film. |
| Why is pulp tissue "radiolucent" on the film? | Pulp tissue is called radiolucent because the radiographed object allow the x-ray to pass through, or is lucent to the rays. |
| Caries is "radiolucent" on a radiograph because? | The most common dental conditions seen are dental caries, periodontal and periapical disease. These conditions destroy a portion of the norma tooth or jaw structure and therefore result in a more radiolucent shadow than is expected. |
| Destruction of the alveolar bone around the apex of a tooth is characteristic of what disease? | Periapical disease such as abscesses |
| Why is it an important asset and valuable to the dentist to develop high-quality radiographs and to process and mount films? | Radiographs should be free from distortion, have the correct density and contrast, and can be used for the detection of dental disease. Taking care in film placement, exposure, and processing. |
| (FOCUSING CUP) Tungsten Filament -CATHODE | - Negative(-) electrode consists of a tungsten filament in a focusing cup made of molybdenum( A very HARD silver metallic element.) Purpose is to supply the electrons to generate x-rays. |
| (HOTTER) Filament -CATHODE | The more electrons are produced. The focusing cup keep the electrons suspended in a electron cloud and when the exposure button is pressed |
| Exposure Button -CATHODE | The circuit when the tube head is completed and the electrons rapidly cross from the cathode to strike the anode |
| Wilhelm Conrad Roentgen | November 8, 1895 |
| Otto walkoff | First dental radiograph |
| C. Edmund Kells | First practial use of radiographs in 1896 |
| Define energy | Anything that has a shape or a form |
| Child Size Film | Size 0 (ZERO) Children younger than 3 years old |
| Narrow Anterior Film | Size 1 (ONE) Anterior views on adults and children |
| Adult Size Film | Size 2 (TWO) |
| Preformed Bite-wing Film | Size 3 (THREE) Infrequently used! |
| Occlusal Film | Size 4 (FOUR) |
| 5 Basic Rules (Known as the extension cone paralleling (XCP), right angle, or long-cone technique | - Film Placement = NEEDS to cover all teeth - Film Position = Film to be parallel to the long axis of the tooth -Vertical Angulation= Central ray perpendicular to the film -Horizontal Angulation= Central ray must be dircted through the contact area |
| Recommended PID for paralleling technique | 16 inch |
| Bisecting Technique) Name 5 reasons |
Created by:
eveaza
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