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Catastrophic failure of a monolithic zirconia prosthesis

Authors
 Jae Seung Chang  ;  Woon Ji  ;  Chang Hoon Choi  ;  Sunjai Kim 
Citation
 JOURNAL OF PROSTHETIC DENTISTRY, Vol.113(2) : 86-90, 2015 
Journal Title
JOURNAL OF PROSTHETIC DENTISTRY
ISSN
 0022-3913 
Issue Date
2015
MeSH
Aged ; Composite Resins/chemistry ; Computer-Aided Design ; Dental Implant-Abutment Design ; Dental Materials/chemistry* ; Dental Prosthesis, Implant-Supported* ; Dental Restoration Failure* ; Denture Bases ; Denture Design ; Denture, Complete, Lower* ; Denture, Overlay ; Follow-Up Studies ; Humans ; Male ; Retreatment ; Titanium/chemistry ; Zirconium/chemistry*
Abstract
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.
Full Text
http://www.sciencedirect.com/science/article/pii/S0022391314004193
DOI
10.1016/j.prosdent.2014.07.016
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sun Jai(김선재) ORCID logo https://orcid.org/0000-0002-0828-8008
Chang, Jae-Seung(장재승) ORCID logo https://orcid.org/0000-0002-6532-4773
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/139467
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