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Directions: Please read the 10 questions carefully and select the MOST correct answer (#11 is a bonus question). You have 30 minutes to complete the examination. Good luck!

1) TRUE FALSE The x-ray was created by William Roentgen in 1895.

2) TRUE FALSE A lead shield must always be placed on a patient prior to

taking x-rays.

3) TRUE FALSE Itís ok to take bitewings as long as the chart is in the exam


4) TRUE FALSE X-rays can be harmful, especially to reproductive organs.

5) TRUE FALSE A women thinks she is pregnant. Itís ok to take x-rays

because there is no diagnostic test proving so.


6) LTC Horowitz is performing an endo on tooth #20, the premolar, which has two canals. What type of

X-ray will you take?

    1. Bitewing
    2. Periapical (PA) using paralleling and bisecting angle technique
    3. Panoramic
    4. Periapical (PA) at a mesial or distal shift
  1. An X-ray is best described as which of the following?
    1. Invisible, weightless packets of energy photons that travel in waves
    2. Emerge from the x-ray tube in a straight line that diverges as it travels
    3. Produces chemical and biological changes (damage)
    4. All of the above.
  1. Different methods of taking periapicals (PAís) include all of the following EXCEPT:
    1. XCP
    2. Hemostat
    3. Holding it in the patientís mouth as Dr. Lee snaps takes the x-ray.
    4. Snap-o-ray
  1. LTC Carter tells you to take a periapical of a tooth he is doing an endo on. He emphasizes how

important it is to get the apex (end of the root) so he can determine the working length of the canal. After you develop the x-ray you notice you chopped of the entire root. Your next course of action is?

    1. Ask him if the x-ray is ok
    2. Take a bitewing using a hemostat
    3. Take another periapical (PA)
    4. None of the above



10) The lead paper in the x-ray film should be discarded as follows:

    1. In the regular trash can
    2. In a special container specifically for lead waste
    3. In the developer tray because someone will clean it up later
    4. On the floor
  1. Dr. Randazzo tells you to take a periapical of #11 the maxillary canine with a shallow palatal vault. After repetitive tries, you fail to capture the apex (end of the root). What was the most likely problem?
    1. Proper bisecting technique was not used
    2. Proper paralleling technique was not used
    3. You did not angle the x-ray cone enough in the (+) direction
    4. Both A and B
    5. A, B and C