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30
| Question | Answer |
|---|---|
| Radiation is defined as: | A form of energy carried by waves or streams of particles. |
| Which of the following statements is true regarding the importance of dental radiographs? | Many dental diseases are typically discovered only through the use of dental radiographs. |
| The x-ray was discovered by: | Wilhelm Roentgen |
| Who exposed the first dental radiograph in the United States using a live person? | Who exposed the first dental radiograph in the United States using a live person? |
| Which of the following statements is true regarding dental x-ray film and formation of the latent image? | The film is placed to the lingual of the teeth. |
| The latent image is stored by the ____ in dental x-ray film. | Silver halide crystals |
| The areas of the film that are ____ energized will be ____ when the film is processed. 1. more; darker 2. more; lighter 3. less; darker 4. less; lighter | 1 and 4 |
| Which of the following types of dental x-ray film is placed inside the mouth? | Intraoral film |
| A two-film packet requires ____ exposure time as a one-film packet. | The same |
| The same | Determine film orientation. |
| The tube side of the dental film packet: | The tube side of the dental film packet: |
| Which type of intraoral film is used to examine the crowns of both the maxillary and the mandibular teeth on one film? | Bite-wing film |
| Bite-wing film | Periapical and occlusal |
| Which type of intraoral film is best for visualizing interproximal surfaces? | Bite-wing |
| A # ____ size film is a standard adult periapical film. | 2 |
| Which size of bite-wing film is used to examine posterior teeth in very small children? | 0 |
| A size # ____ film is the most frequently used bite-wing film. | 2 |
| A fast film responds more quickly than a slow film, because: | The silver halide crystals in the emulsion are larger. |
| Film is best stored in an area that is: | Cool and dry. |
| The film base is ____ mm thick. | 0.2 |
| The film emulsion is: | Attached to both sides of the film. |
| The film emulsion is composed of a homogenous mixture of: | Gelatin and silver halide crystals |
| Retakes resulting in unnecessary patient exposure to x-radiation must be avoided: | At all times |
| To avoid occupational exposure to x-radiation, the dental radiographer must always: (Note: Though all are true, one is the most critical and encompasses the others.) | Avoid the primary beam. |
| Radiographs enable the dental professional to see ____ conditions that may otherwise go undetected. Rare | Many |
| When radiographs are properly prescribed, exposed, and processed, the benefit of disease detection ____ the risk of small doses of x-radiation. | Far outweighs |
| Far outweighs | Tubehead |
| The ____ activate(s) the machine to produce x-rays. | exposure button |
| During an exposure: | The exposure button is firmly depressed until the preset exposure time is completed. |
| The ____ intraoral radiographic examination is used to examine the entire tooth (crown and root) and supporting bone. | Periapical |