Prosthodontics & Occlusion · single question
A 32-year-old female has a crown on an upper central incisor that keeps coming off. She has a deep bite. What is the cause?
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Correct answer: A. Problematic occlusion / deep-bite overloading
A deep bite produces excessive anterior guidance and shear forces on the crowns of upper centrals during excursive movements, dislodging the crown. Addressing the occlusion (bite-plane therapy, ortho, or occlusal adjustment) is needed in addition to remaking the crown.
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