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NC Dental U RAD Exam Study Guide
Questions with Verified Answers
List the six uses of dental images ✔✔1. Detect dental decay in early stages
- Identify the bone loss in early stages
- Locate abnormalities in surrounding hard and soft tissues
- Evaluate growth and development
- Document the condition of a patient at specific times
- Obtain information during a dental procedure, such as a broken root tip during a oral surgical procedure
The dental x-ray machine has three primary components. Which are day and first list the one is said to be the heart of the generating system. ✔✔1. The tube head (heart)
- Control panel
- Extension arm
Complete the sentence.
The ______ ______ and ________ _______ Must be used on all patients for all exposures ✔✔Lead apron
Thyroid collar
List the Three roles of radiation protection ✔✔1.Always stand behind lead barrier
- Never stand in the direct line of primary beam
- Never stand closer than 6 feet to x-ray unit
Define radiopaque and give some examples of what it would appear as radiopaque on A radiograph ✔✔Radiograph. Appears dark/black
Radiopaque. Appears white/light gray
examples: radiograph ex- Air spaces, soft tissues.
Radiopaque ex- Metal enamel
What is electromagnetic radiation Made up of and how fast does it travel ✔✔Photons, That travel through space at the speed of light
There are three types of radiation, list them with a short definition ✔✔1. Primary radiation (useful beam)- x-ray that comes from the Target of x-ray tube
Washing ✔✔Follows fixation
Drying ✔✔Final step in processing
With normal usage processing solution should be changed ___________. And list some things that would affect the life of the solution. ✔✔3 to 4 weeks
Time lapse between changes, Number and size of film being processed, and number of patients being seen.
In Dental film contracts the fixer prior to processing, what will be caused? ✔✔Fixer spots
The consumer- patient radiation health and safety act is a federal law that requires all who take dental images to be.... ✔✔1. Properly trained
- Certified
There will be times that the patient will refuse dental x-rays. Write out the steps that must be taken to ensure proper education and documentation takes place. ✔✔1.Patient education
- Declaration or waiver
- Dennis decision
- Documentation
Where is the PPE (Personal protective equipment) Needed while taking exposures on patients ✔✔Lab coat, Gloves, facemask, and eye weat
PSPs are a major source of ✔✔Cross contamination
PSPs are disposable. True or false? ✔✔False
Bite wing ✔✔detecting interproximal decay (periodontal disease)
Periapical (PA) ✔✔Shows 2-3mm Beyond the Apex
panoramic ✔✔Locate impacted wisdom teeth
Positioning a Patient chain too low during a panoramic image results in ✔✔Mandibular incisors will be blurred and condyles not Visible
Positioning patients jaws or outside the focal trough ✔✔distortion
Positioning patients to high During a panoramic image Can result in ✔✔Reverse smile line
