A core fracture with all-ceramic crowns: a case report

Gen Dent. 2010 Jul-Aug;58(4):306-9; quiz 310-1.

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.

MeSH terms

  • Adult
  • Crowns*
  • Dental Porcelain*
  • Dental Restoration Failure*
  • Humans
  • Male
  • Mandible
  • Molar
  • Tooth Fractures / therapy*

Substances

  • Dental Porcelain