CIT Radiography & Imaging Flashcards
6 cards from real CIT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CIT Radiography & Imaging flashcards as text
In CBCT imaging for implant dentistry, what does 'field of view' (FOV) describe, and how does it affect image quality and radiation dose?
Answer: The volume of tissue captured in the scan; smaller FOVs yield higher resolution with lower radiation dose
Field of view describes the volume of tissue included in the CBCT scan; selecting the smallest FOV that covers the area of interest maximizes resolution while minimizing patient radiation exposure.
Which periapical radiographic finding most reliably confirms successful osseointegration of a dental implant?
Answer: A continuous radio-opaque band of bone in direct contact with the implant surface without intervening gaps
Successful osseointegration is indicated by a continuous, dense radio-opaque band of bone in direct contact with the implant surface with no intervening radiolucent zones.
What is the function of a 'digital surgical guide' generated from CBCT implant planning software?
Answer: To transfer the virtually planned implant position and angulation to a physical guide used during surgery for accurate placement
Digital surgical guides are fabricated from the virtual implant placement plan, allowing accurate transfer of the pre-planned implant position, angulation, and depth to the actual surgical site.
Which radiographic finding on a periapical X-ray is characteristic of peri-implantitis?
Answer: Saucer-shaped (crater-like) crestal bone loss presenting as a radiolucency around the implant neck
Peri-implantitis characteristically presents as a saucer-shaped radiolucent defect in the crestal bone surrounding the implant neck, reflecting inflammatory bone resorption.
Why is standardized periapical radiographic technique critical for long-term implant monitoring at recall appointments?
Answer: It allows reliable comparison of bone levels between sequential radiographs to detect progressive bone loss
Standardized technique with reproducible angulation and positioning ensures that sequential periapical radiographs can be accurately compared over years to detect and quantify progressive crestal bone loss.
Which CBCT acquisition parameter most directly controls the radiation dose received by the patient?
Answer: Field of view size combined with voxel resolution settings
Field of view size and voxel resolution are the primary determinants of radiation dose in CBCT; smaller FOVs and larger voxel sizes (lower resolution) significantly reduce patient exposure.