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THI’ve always preferred a chamfer finish for my full coverage crown preparations. It works well with zirconia, metal, and lithium disilicate (LiDiSi) crowns. However, when it comes to PFM crowns, a chamfer alone may be insufficient, as they typically require a shoulder margin for optimal porcelain and metal thickness cervically.
To balance strength with conservation, I usually modify the crown design—opting for a PFM with a 360-degree metal collar. This approach allows me to preserve more tooth structure cervically while still achieving a reliable ferrule effect.
Alternatively, vertical preparations (verti-preps) can be a great option when the goal is to conserve cervical tooth structure, especially in cases where minimal reduction is key.
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