CPT Radiographic Analysis & Bone Assessment Flashcards
6 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPT Radiographic Analysis & Bone Assessment flashcards as text
Bone density changes in periodontitis become radiographically detectable when approximately how much mineral is lost?
Answer: 30–50% mineral loss
Radiographic detection of bone loss requires at least 30–50% mineral loss before changes become visible, making clinical probing essential for early detection.
A 'moth-eaten' appearance of alveolar bone on a radiograph is associated with:
Answer: Aggressive bone destruction seen in aggressive periodontitis or pathology
A moth-eaten or irregular radiolucent pattern of alveolar bone suggests rapid or aggressive bone destruction.
On a periapical radiograph, cortical bone appears as:
Answer: A radiopaque (bright/white) line
Cortical bone appears radiopaque on radiographs due to its high mineral density, which absorbs more X-rays than surrounding structures.
A three-wall infrabony defect is significant in regenerative periodontics because:
Answer: It has intact bone walls on three sides, making it most favorable for regeneration
A three-wall infrabony defect has intact bone on three sides, which supports blood clot stability and creates the most favorable conditions for regenerative outcomes.
Which radiographic landmark helps determine the severity of furcation involvement?
Answer: Root trunk length and furcation entrance position relative to remaining bone
Root trunk length and the position of the furcation entrance relative to remaining bone level are key to assessing furcation severity radiographically.
Calculus deposits are most reliably detected on radiographs when they are:
Answer: Heavy interproximal calculus bridging adjacent teeth
Heavy interproximal calculus that bridges between adjacent teeth is most radiographically visible due to its density and favorable projection angle.