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Clinical Oral Investigations
Published in: Clinical Oral Investigations 1/2016

01-01-2016 | Original Article

Clinical outcomes of zirconia-based implant- and tooth-supported single crowns

Authors: Farahnaz Nejatidanesh, Hedayat Moradpoor, Omid Savabi

Published in: Clinical Oral Investigations | Issue 1/2016

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Abstract

Objectives

Zirconia-based restorations have been increasingly used on implant and teeth abutments, but the evidence about clinical outcomes of these restorations is limited. The aim of this study was to assess up to 7-year clinical outcomes of implant- and tooth-supported zirconia-based single crowns.

Materials and methods

In this retrospective study, 261 patients with 556 single crowns supported by either teeth (324) or implants (232) were examined during 3- to 7-year follow-up (mean observation of 60.70 months for tooth and 59.20 months for implant-supported crowns). California Dental Association (CDA) quality evaluation system was used to evaluate the restorations. Soft tissue status was assessed using plaque and gingival index scores, bleeding on probing, and pocket depth. Patient and professional satisfaction were evaluated by visual analog scale (VAS).

Results

The 5-year Kaplan–Meier survival probability was 98.3 and 97.3 for implant- and tooth-supported crowns, respectively. In regard to CDA rating, most of the crowns were ranked as either excellent or acceptable (99.5 %). The recorded failures were replacement of the crown due to porcelain chipping (3), implant failure (1), and teeth extraction (5). Soft tissue parameters were not affected by the restorations compare to control teeth. The VAS was high for both patients and clinicians.

Conclusions

Zirconia-based single crowns on both tooth and implant abutments showed promising clinical performance in this up to 7-year follow-up.

Clinical relevance

The zirconia-based single crowns can be used clinically for tooth- and implant-supported restorations.
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Metadata
Title
Clinical outcomes of zirconia-based implant- and tooth-supported single crowns
Authors
Farahnaz Nejatidanesh
Hedayat Moradpoor
Omid Savabi
Publication date
01-01-2016
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 1/2016
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-015-1479-3

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