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Rad 2
| Question | Answer |
|---|---|
| The xomponet part of an xray film described as a thin transparent coating that is placed over the emulsion is termed what? | Protective layer |
| The componet part of the xray film descrubed as a flexible piece of plastic that withstands heat, moisture, and chemical heat is termed? | Film base |
| The invisible pattern of stored energy on the exposed film is termed what? | Latent image |
| One advantage of a film with emulsion coating on both sides is that? | The film requires less radiation exposure to make an image |
| The purpose of a lead foil sheet in the film packet is? | To protect the film from backscatter radiation |
| What is located on the back of the film packet? | The film speed, the phrase opposite side towards tube, number of films enclosed |
| Which film size is known as the standard film? | Size 2 |
| Which film size is the largest intraoral Film? | Size 4 |
| The speed of a film is determined by the size of the silver halide crystals in the emulsion. State difference between large and small crystals | The larger the crystals the faster the film speed |
| A film that is placed outside of the mouth during xray exposure is termed | Extraoral |
| What size of film is recommended for the use with the bite wing technique in an adult patient | Size 2 |
| What size of film is recommended for the use with the bitewings technique in a child patient with primary dentition? | Size 0 |
| How is the patients head position prior to exposing the film in the bitewing technique? | The upper arch is parallel to the floor |
| What are bitewing films primarily used to detect? | Caries , decay |
| What film size is used to include all the posterior teeth in one bite wing exposure? | Size 3 |
| Overexposed film will appear how? | Dark |
| Underexposed film will appear how? | Light |
| Film that is exposed to light will appear how? | Black |
| Unexposed film will appear how? | Clear |
| A reversed film will appear | Light and appearance of tire tracks |
| Too much vertical angulation results in images that are? | Foreshortened |
| Too little vertical angulation results in images that are? | Elongated |
| Incorrect horizontal angulation results in images that are? | Overlapped |
| The pattern of stored energy on an exposed film is termed the: | Latent image |
| This image remained invisible until it undergoes processing | Latent image |
| What are the 5 steps in manuel film processing? | Development, rinsing, fixation, washing, and drying |
| Take a film through the developing-process for automatic processing | Develop, fix, wash, dry |
| Explain what happens to the film in the developer | Reduced the exposed energized silver halide crystals chemically into black metallic silver. Solution softens film emulsion during this process |
| Explain what happens to the film in the fixer | Remove the unexposed unenergized silver halide crystals from film emulsion. Fixer hardens film emulsion during this process |
| The portion of a processed radiograph that appears dark or black is termed | Radiolucent |
| The portion of a processed radiograph that appears light or white is termed | Radiopaque |
| Which of the following (bone, enamel, Dentin, air space) appears nose radiolucent onna dental radipgraph | Air space |
| List some examples of radiopaque structures seen on radipgraphs | Bone, enamel, and Dentin. Metal restorations (amalgam crowns) |
| The overall blackness or darkness of a dental radipgraph is termed | Density |
| Increasing the milliamperage (mA) will cause | An increase in density; the film appears darker |
| Increasing the operating kilo voltage peak (KVP) will cause | An increase in density; the film appears darker |
| Increasing the exposure time will cause | An increase in Density, the film appears darker |
| The difference in the degrees of blackness between adjacent areas on a dental radipgraph is termed | Contrast |
| When viewed on a light source, a dental radipgraph that demonstrates many shades of gray is said to have: | Low contrast |
| When viewed on a light source, a dental radipgraph that demonstrates very dark areas and very light areas is said to have | High contrast |
| The one exposure factor that has a direct influence on the contrast of a dental radipgraph is | Operating kVp |
| The capability of the 1 ray film to reproduce distinct outlines of an object is termed | Sharpness |
| The unsharpness or blurred edges seen on a radipgraph is termed | Penumbra |
| The geometric characteristic that refers to a radiographic image that appears larger than it's actual size is termed | Magnification |
| A variation in the true size and shape of the object being radipgraphed is termed | Distortion |
| Define sensor | In digital imaging, a receptor that is used to capture intra-oral or extra oral image |
| Define direct digital imaging | Method of obtaining a digital image, in which an intra-oral sensor is exposed to xradiation to capture a dental image that can be viewed on a computer monitor |
| Define storage phosphor imaging | Method of obtaining a digital image in which the image is recorded on a phosphor coated plate |
| Define indirect digital imaging | Method of obtaining a digital image, in which a sensor is scanned following exposure to xradiation and then converted into a digital form that can be viewed on a computer monitor |
| If a patient asks you: why are dental xrays necessary what is your answrr? | Yes there are many disease and conditions in the mouth that cannot he detected by visual examination |
| How often should dental xrays be taken | The number, type, and frequency of a dental xray are determined by the dentist and are based on a patients individual needs |
| What can you do to help a patient with a gag reflex | Never suggest gagging, reassure the patient, suggest deep breathing, try to distract the patient, try to reduce tactile stimuli |
Created by:
Aisha.rios