Prosthodontics & Occlusion · single question
How do you check for interferences on the INTERNAL (intaglio) surface of a crown during seating?
Show answer and explanation
Correct answer: A. A thin disclosing medium such as Fit Checker (vinyl polyether silicone)
- A. Correct. A low-viscosity disclosing material (e.g., Fit Checker) thinly coats the intaglio; show-through/perforation marks the binding contacts to relieve.
- B. Heavy-body PVS is for impressions, too thick to detect fine internal interferences.
- C. Articulating paper marks occlusal contacts, not the internal fit.
- D. Pressure-indicating paste is used for denture intaglio fit, and the occlusal-only use does not check the crown interior.
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