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In-vitro performance of CAD/CAM crowns with insufficient preparation design

Rosentritt, Martin ; Preis, Verena ; Behr, Michael ; Krifka, Stephanie



Abstract

Purpose: To compare the debonding and fracture force of different CAD/CAM composite crowns with respect to the influence of water storage (Od vs. 90d/37 degrees C) and types of cementation (adhesive vs. self-adhesive). Methods: Extracted human molars were prepared with a worst-case preparation scenario providing a non retentive design (height similar to 4 mm; angle similar to 15 degrees) and ...

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