SwePub - search: WFRF:(Torizuka K)

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1.	Kokubo, Yuji, et al. (author) The effect of core framework designs on the fracture loads of all-ceramic fixed partial dentures on posterior implants 2007 In: Journal of Oral Rehabilitation. - : Wiley. - 1365-2842 .- 0305-182X. ; 34:7, s. 503-507 Journal article (peer-reviewed)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.

Kokubo, Yuji, et al. (author)
The effect of core framework designs on the fracture loads of all-ceramic fixed partial dentures on posterior implants
2007
In: Journal of Oral Rehabilitation. - : Wiley. - 1365-2842 .- 0305-182X. ; 34:7, s. 503-507
Journal article (peer-reviewed)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.

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