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Verfasst von:Bömicke, Wolfgang [VerfasserIn]   i
 Rues, Stefan [VerfasserIn]   i
 Hlavacek, Verena Anna [VerfasserIn]   i
 Rammelsberg, Peter [VerfasserIn]   i
 Schmitter, Marc [VerfasserIn]   i
Titel:Fracture behavior of minimally invasive, posterior, and fixed dental prostheses manufactured from monolithic zirconia
Verf.angabe:Wolfgang Bömicke, Stefan Rues, Verena Hlavacek, Peter Rammelsberg, Marc Schmitter
E-Jahr:2016
Jahr:26 August 2016
Umfang:15 S.
Teil:volume:28
 year:2016
 number:6
 pages:367-381
 extent:15
Fussnoten:Gesehen am 14.05.2020
Titel Quelle:Enthalten in: Journal of esthetic and restorative dentistry
Ort Quelle:Oxford [u.a.] : Wiley-Blackwell, 2001
Jahr Quelle:2016
Band/Heft Quelle:28(2016), 6, Seite 367-381
ISSN Quelle:1708-8240
Abstract:Objectives To compare ultimate fracture load (Fu), load at first damage (F1d), and fracture pattern for posterior fixed dental prostheses (FDPs) manufactured from translucent, yttria-stabilized zirconia polycrystal. Methods Premolar-size FDPs in 4 test groups (n = 16/group) were constructed as veneered complete crown-retained (group 1), monolithic complete crown-retained (group 2), monolithic partial veneer crown-retained (group 3), or monolithic resin-bonded (group 4) prostheses with minimum zirconia wall thickness (0.5 mm). Adhesively cemented to metal abutments, half of the prostheses were artificially aged by use of 10,000 thermocycles (6.5°C/60°C) and 1,200,000 chewing cycles (F = 108 N), before fracture loading. Statistics included two-way non-parametric ANOVA and Dunn-Bonferroni post-hoc tests (α = 0.05). Results None of the restorations failed during artificial aging. Fu was affected by test group (p < 0.001); F1d was also affected by the factor combination of test group and aging (p = 0.001 for test group; p = 0.049 for test group*aging). Mean Fu for all groups exceeded 1000 N; it was comparable for group 1 and group 2 and statistically significantly higher for group 2 and group 3 than for group 4 (p < 0.01). Fracture usually occurred through the retainer wall. F1d = 200 N was determined for individual samples in group 1 (chipping) and group 3 (local debonding). Conclusions Fu of all the restorations was adequate for clinical use. Complications might, however, be expected at forces below 500 N for veneered prostheses (chipping) as well as for monolithic partial veneer crown-retained prostheses (local debonding). Clinical Significance With regard to fracture behavior, all-ceramic complete crown-retained fixed dental prostheses (FDP) manufactured from monolithic zirconia, with a retainer wall thickness of 0.5 mm, might be suitable for use as a conservative alternative to their veneered counterparts in the rehabilitation of posterior tooth loss. Monolithic zirconia resin-bonded FDP might, moreover, be a viable alternative to resin-bonded FDPs with metal adhesive retainers in posterior arches, with improved esthetics and biocompatibility. The performance of both should, however, be verified in clinical trials. (J Esthet Restor Dent 28:367-381, 2016)
DOI:doi:10.1111/jerd.12242
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1111/jerd.12242
 Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/jerd.12242
 DOI: https://doi.org/10.1111/jerd.12242
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1698238630
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