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Updated: Jun 11, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
A core fracture with all-ceramic crowns: a case report
Leslie C T Chew1, Chris C Wyatt, Nigel M King
1Department of Oral Health Sciences, University of British Columbia, Vancouver, Canada.
Abstract:
This article is an observational-descriptive type case study with references to recent literature on ceramic fracture. The case selected was an unusual incidence of a veneer-to-core fracture of a Procera AllCeram crown after 18 months of service. This unusual case represents a significant concern to general dentists, because the highly dense alumina core is supposed to show comparable fracture resistance to the metal cores of conventional metal-ceramic crowns. Clinical evidence shows that bruxism, manufacturing defects, pre-cementation occlusal adjustment by the laboratory technician or dentist, and the cement used are factors that contribute to the fracture of ceramic cores.
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