Prosthodontics & Occlusion · single question
During try-in, a crown does not fully seat and shows open margins on the distal. What is the most likely cause?
Show answer and explanation
Correct answer: A. A tight (heavy) proximal contact on the distal
- A. Correct. An overly tight distal proximal contact prevents complete seating, lifting the crown and opening the margins; adjust the contact.
- B. Cement is not yet involved at the dry try-in stage.
- C. An undersized prep would make the crown loose, not prevent seating.
- D. Occlusal contact relates to bite height, not failure to seat with open margins.
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