Prosthodontics & Occlusion · single question
When adjusting a new molar crown's occlusion in a patient, the goal in lateral excursions is to:
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Correct answer: A. Allow canine guidance to disocclude the posterior crown during lateral movement
- A. Correct. In a canine-guided scheme, the canine disoccludes the posterior teeth during lateral excursions, protecting the new molar crown from damaging lateral/excursive forces.
- B. A heavy isolated working contact would overload the crown.
- C. A non-working (balancing) contact is an interference and should be eliminated, not created.
- D. Leaving the crown out of occlusion (infra-occlusion) fails to restore function.
Note: Source stem was abbreviated; this tests the principle that excursive forces should be directed away from a posterior restoration (canine guidance / anterior guidance).
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