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A clinical evaluati...
A clinical evaluation of cobalt-chromium metal-ceramic fixed partial dentures and crowns : A three- to seven-year retrospective study
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- Eliasson, Alf, 1957- (författare)
- Department of Prosthetic Dentistry, Postgraduate Dental Education Center, Örebro, Sweden
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- Arnelund, Carl-Fredrik (författare)
- Department of Prosthetic Dentistry, Postgraduate Dental Education Center, Orebro, Sweden
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- Johansson, Anders (författare)
- Department of Oral Sciences, Prosthodontics, Faculty of Dentistry, University of Bergen, Bergen, Norway
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(creator_code:org_t)
- Elsevier, 2007
- 2007
- Engelska.
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Ingår i: The Journal of prosthetic dentistry (Print). - : Elsevier. - 0022-3913 .- 1097-6841. ; 98:1, s. 6-16
- Relaterad länk:
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https://doi.org/10.1...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Statement of problem: In severely compromised dentition, loading of long-span and cantilever metal-ceramic fixed partial dentures (FPDs) could result in framework deformation and porcelain fractures. The use of cobalt-chromium (Co-Cr) alloys may be advantageous, but there is little information on the longevity of, and complications with, prostheses made with these alloys.Purpose: The aim of this retrospective study was to report the survival and complication rates of Co-Cr metal-ceramic FPDs and crowns followed over a 3- to 7-year period.Material and methods: The study included 42 patients with a total of 51 FPDs and 12 single crowns assigned to 1 of 3 groups. The 3 groups comprised patients with abutment teeth with a questionable prognosis (n=10), advanced chronic periodontitis (n=19), or abutment teeth with a positive prognosis (n=13). The FPDs had a mean of 9.7 units (range of 3–14). Of the FPDs, 32 were provided with a cantilever on 1 side (n=24) or both sides (n=8). The mean observation time was 51 months (range of 28–82). All patients were examined by 2 independent prosthodontists using the California Dental Association (CDA) assessment system for evaluation. One-way ANOVA with Fisher's LSD post hoc test and the Mann-Whitney U test were used for statistical analyses (α=.05).Results: Seventeen (34%) of the FPDs had biological and/or technical complications. Six (12%) FPDs were completely or partially removed during the observation period, 1 framework fractured, and 9 (17.6%) FPDs had ceramic fractures. Fifteen of the 21 fractured FPD units were related to FPDs that were placed in 3 patients with bruxing habits. The CDA rating for marginal integrity was “excellent” for more than 98% of the abutments. No patients reported adverse reactions to the material.ConclusionsMetal-ceramic FPDs made of cobalt-chromium alloy performed acceptably in the questionable prognosis and advanced chronic periodontitis groups.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Odontologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dentistry (hsv//eng)
Nyckelord
- Medicine
- Medicin
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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