Locate the Object: April 2014 8


This month I have two cases to use your image shift and SLOB (Same-Lingual, Opposite-Buccal) information.

1. The object in question is the metallic restoration on the canine.

LTO April 2014 1Which surface of the canine (buccal or lingual) is it located on?

2. The object in question is the broken endodontic file (orange arrow) in the first molar.

LTO April 2014 2Which root (buccal or lingual) is it in?

Answers coming Thursday, April 17.  You can answer either in the comments, twitter (@DrGstoothpix) or wait.  If you have any questions, please leave them below. Thanks and enjoy!


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8 thoughts on “Locate the Object: April 2014

    • Dr. Shawneen Gonzalez Post author

      This is where you need to be able to visualize the positioning of each radiograph if using the image shift principle.
      Using the first set of radiographs, the posterior periapical radiograph would have approximately 45 – 50 degree horizontal angle. When you move to the anterior periapical, the horizontal angle decreases to approximately 30 degrees. This moves the source of radiation anterior which will project objects posterior on the radiograph. Does this help you get started?

    • Dr. Shawneen Gonzalez Post author

      I am getting back into posting a case or two a month. They will come out around the second Tuesday of each month with the answers coming two days later. I’m glad you are finding these helpful. Thanks for letting me know. 🙂