Catastrophic failure of a monolithic zirconia prosthesis

Jae Seung Chang, Woon Ji, Chang Hoon Choi, Sunjai Kim

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Recently, monolithic zirconia restorations have received attention as an alternative to zirconia veneered with feldspathic porcelain to eliminate chipping failures of veneer ceramics. In this clinical report, a patient with mandibular edentulism received 4 dental implants in the interforaminal area, and a screw-retained monolithic zirconia prosthesis was fabricated. The patient also received a maxillary complete removable dental prosthesis over 4 anterior roots. At the 18-month follow-up, all of the zirconia cylinders were seen to be fractured, and the contacting abutment surfaces had lost structural integrity. The damaged abutments were replaced with new abutments, and a new prosthesis was delivered with a computer-assisted design and computer-assisted manufacturing fabricated titanium framework with denture teeth and denture base resins. At the 6-month recall, the patient did not have any problems. Dental zirconia has excellent physical properties; however, care should be taken to prevent excessive stresses on the zirconia cylinders when a screw-retained zirconia restoration is planned as a definitive prosthesis.

Original languageEnglish
Pages (from-to)86-90
Number of pages5
JournalJournal of Prosthetic Dentistry
Issue number2
Publication statusPublished - 2015 Feb 1

Bibliographical note

Publisher Copyright:
© 2015 Editorial Council for the Journal of Prosthetic Dentistry.

All Science Journal Classification (ASJC) codes

  • Oral Surgery


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