The effect of core framework designs on the fracture loads of all-ceramic fixed partial dentures on posterior implants

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The effect of core framework designs on the fracture loads of all-ceramic fixed partial dentures on posterior implants

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Publication Article, peer reviewed scientific
Title The effect of core framework designs on the fracture loads of all-ceramic fixed partial dentures on posterior implants
Author(s) Kokubo, Yuji ; Tsumita, Mitsuyoshi ; Sakurai, S ; Torizuka, K ; Vult von Steyern, Per ; Fukushima, Shunji
Date 2007
English abstract
This study evaluated the fracture loads of three-unit all-ceramic bridges on implants; the core frameworks of the bridges were made of zirconium oxide. Three core framework designs were fabricated according to the design of the bars between the retainers: (i) straight, (ii) curved in the occlusal direction, or (iii) curved in the gingival direction. A static load was applied at the centre of the pontic, and the mean initial crack and final fracture loads were measured and compared. The core framework curved in the occlusal direction had the highest final fracture loads; there were significant differences (P < 0.05) in the mean final fracture load, whereas initial fracture load, which fractured of veneered porcelain, did not show significant differences among three designs. The all-ceramic bridges on the implants made with Procera zirconium core frameworks had high final fracture load. The core framework design that curved in the occlusal direction helped the framework withstand the occlusal load, which results in reliable prostheses, especially in the molar region.
DOI http://dx.doi.org/10.1111/j.1365-2842.2007.01751.x (link to publisher's fulltext)
Host/Issue Journal of oral rehabilitation;7
Volume 34
ISSN 0305-182X
Pages 503-507
Language eng (iso)
Subject(s) Medicine
Research Subject Categories::ODONTOLOGY::Oral prosthetics
Handle http://hdl.handle.net/2043/5462 (link to this page)

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