Technical complications and failures of zirconia-based prostheses supported by implants followed up to 7 years: a case series.

Kolgeci, Lumni; Mericske, Erno; Worni, Andreas; Walker, Petra; Katsoulis, Joannis; Mericske, Regina (2014). Technical complications and failures of zirconia-based prostheses supported by implants followed up to 7 years: a case series. International journal of prosthodontics, 27(6), pp. 544-552. Quintessence Publ. 10.11607/ijp.3807

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PURPOSE To evaluate technical complications and failures of zirconia-based fixed prostheses supported by implants. MATERIALS AND METHODS Consecutive patients received zirconia-based single crowns (SCs) and fixed dental prostheses (FDPs) on implants in a private clinical setting between 2005 and 2010. One dentist performed all surgical and prosthetic procedures, and one master technician performed and coordinated all laboratory procedures. One-piece computer-aided design/ computer-assisted manufacture technology was used to fabricate abutments and frameworks, which were directly connected at the implant level, where possible. All patients were involved in a recall maintenance program and were finally reviewed in 2012. Data on framework fractures, chipping of veneering ceramics, and other technical complications were recorded. The primary endpoint was failure of the prostheses, ie, the need for a complete remake. A life table analysis was calculated. RESULTS A total of 289 implants supported 193 zirconia-based prostheses (120 SCs and 73 FDPs) in 127 patients (51 men, 76 women; average age: 62.5 ± 13.4 years) who were reviewed in 2012. Twenty-five (13%) prostheses were cemented on 44 zirconia abutments and 168 (87%) prostheses were screw-retained directly at the implant level. Fracture of 3 frameworks (1 SC, 2 FDPs) was recorded, and significant chipping resulted in the remake of 3 prostheses (1 SC, 2 FDPs). The 7-year cumulative survival rate was 96.4% ± 1.99%. Minor complications comprised 5 loose screws (these were retightened), small chips associated with 3 prostheses (these were polished), and dislodgement of 3 prostheses (these were recemented). Overall, 176 prostheses remained free of technical problems. CONCLUSIONS Zirconia-based prostheses screwed directly to implants are clinically successful in the short and medium term.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Prosthodontics (discontinued)
04 Faculty of Medicine > School of Dental Medicine > Division of Fixed Prosthodontics (discontinued)

UniBE Contributor:

Kolgeci, Lumni; Worni, Andreas; Walker, Petra; Katsoulis, Joannis and Mericske, Regina

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0893-2174

Publisher:

Quintessence Publ.

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

27 Jan 2015 11:01

Last Modified:

25 Jan 2017 12:15

Publisher DOI:

10.11607/ijp.3807

PubMed ID:

25390869

URI:

https://boris.unibe.ch/id/eprint/61746

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