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Erschienen in: Clinical Oral Investigations 8/2018

08.03.2018 | Original Article

Ten-year survival and chipping rates and clinical quality grading of zirconia-based fixed dental prostheses

verfasst von: Maren Teichmann, Anna Lena Wienert, Marcia Rückbeil, Volker Weber, Stefan Wolfart, Daniel Edelhoff

Erschienen in: Clinical Oral Investigations | Ausgabe 8/2018

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Abstract

Objectives

To prospectively evaluate the clinical long-term outcome of 3- to 6-unit fixed dental prostheses (FDPs) made of hot isostatic pressed (HIP) zirconia frameworks, veneered with a synthetic sintering glass-ceramic.

Materials and methods

A total of 27 different restorations were cemented in 21 patients. FDPs were examined with regard to biological and technical complications/failures. Additionally, clinical quality was assessed based on (i) the California Dental Association (CDA) criteria, (ii) the patient’s viewpoint according to Hickel, and (iii) periodontal parameters. Descriptive statistics were computed. The Kaplan-Meier estimator was used for the survival and chipping-free rates. Wilcoxon signed ranks test (ordinal/continuous data) or the McNemar test (binary data) was used to describe the periodontal outcome of abutment teeth versus that of the respective control teeth.

Results

After a mean observation period of 10.0 ± 2.1 years, the dataset comprised 15 patients with 20 (mainly posterior) FDPs. The 10-year survival rate and 10-year chipping-free rate were 95.0% (CI 86.0–100%) and 78.8% (CI 62.2–99.7%), respectively. Evaluation based on the CDA criteria yielded satisfactory (excellent or acceptable) results for all categories. This was also confirmed by the high level of patient satisfaction. The periodontal health of tissues adjacent to the study teeth was clinically acceptable, but inferior to the ones of control teeth.

Conclusions

FDPs made from CAD/CAM-fabricated HIP zirconia ceramic frameworks have a favorable survival rate. However, because damage to the surface texture showed a disproportionate increase after long-term usage, additional long-term studies are required.

Clinical relevance

The outstanding mechanical properties of zirconia-based systems have contributed to the belief that all-ceramics are a reliable material for prosthetic restorations. However, only long-term reports (such as this one) provide more detailed information on actual clinical efficacy.
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Metadaten
Titel
Ten-year survival and chipping rates and clinical quality grading of zirconia-based fixed dental prostheses
verfasst von
Maren Teichmann
Anna Lena Wienert
Marcia Rückbeil
Volker Weber
Stefan Wolfart
Daniel Edelhoff
Publikationsdatum
08.03.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
Clinical Oral Investigations / Ausgabe 8/2018
Print ISSN: 1432-6981
Elektronische ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-018-2378-1

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