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M6W2
| Question | Answer |
|---|---|
| Kilovoltage determines the quantity of radiation. T/F | False, milliamperage determines the quantity of radiation. |
| What is the maximum permissible dose of radiation per year that radiation workers may be exposed to? | 5 rems or .05 Sv |
| What is the latent period? | Time between exposure and response. |
| What radiation if formed when the primary beam strikes the patient? | Secondary radiation |
| Do short wavelengths with high frequency equal the most energy? | Yes |
| Secondary radiation escaped in all directions from the tube head. T/F | False, leakage radiation escapes in all directions from the tube head. |
| What radiation comes from the tube head? | Primary radiation |
| The lead apron should always be folded neatly and put away. T/F | False, never folded |
| Can digital x-rays be altered easily? | Yes |
| What x-ray technique always requires the use of an x-ray holder? | The paralleling technique |
| How is fixer and developer solution disposed of? | A paid waste hauler comes and picks it up to be disposed. |
| Are imaging systems used by dentists? | Yes |
| What is labial mounting? | Mounting x-rays with the mounting dot out towards the operator. |
| What is a quality assurance program for dental x-rays? | Routine procedures that ensure high quality x-rays and minimal risks to patients. |
| Are digital x-rays available for dentists? | Yes. |
| What error is caused by the beam missing part of the film? | Cone cutting |
| Are dental offices able to attach digital files and send them to insurance companies, dental offices and patients? | Yes |
| Does Kodak Ektaspeed plus intraoral film reduce radiation to the patient by up to 20% compared to E-speed film? | No,Kodak F-speed film reduces the radiation to the patient by 20%? |
| What is the difference between the shades of gray in an x-ray called? | Contrast |
| In what type of x-ray can you see the patient's profile? | Cephalometric x-ray |
| What error is caused by the patient's head or x-ray tube head moving? | Blurred image |
| Why might a light image appear on the x-ray film? | Underexposure or under developing |
| Why may a brown stain result? | Insufficient rinsing |
| What color spectrum is a safe light? | red-orange |
| How long should a dental assistant fix the film compared to how long they developed the film? | Twice as long |
| What would a dental assistant require to duplicate dental film? | Duplicating film, a duplicator machine, and a processor |
| The desired temperature for automatic film processing is 100 degrees F. T/F | False, 90 degrees |
| What are extraoral cassettes lined with? | Intensifying screens and phosphors |
| What side is the focusing cup on? | The cathode or negative side |
| What is another name collimator? | Lead diaphragm |
| What error is caused by having too much angulation? | Foreshortening |
| What can occlusal radiographs diagnose? | Cysts, impacted teeth & supernumerary teeth |
| What does a PA radiograph show? | The apex, eruption & tooth development |
| Who should use a lead apron with thyroid collar? | Everyone |
| What position should a patient be in during bitewing exposure? | Upright position |
| When using the paralleling technique, the film must be 45 degrees to the long axis of the tooth. T/F | False, it must be parallel to the long axis of the tooth |
| What could appear in a bitewing x-ray? | Caries, alveolar crests & faulty restorations |
| What is the size of narrow anterior film? | Size 1 |
Created by:
ddriggers
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