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固定种植体支持义齿的丙烯酸树脂和金属增强丙烯酸树脂远中延伸悬臂梁的抗折性。

Fracture resistance of acrylic resin and metal-reinforced acrylic resin distal extension cantilevers of fixed implant-supported prostheses.

作者信息

Osswald Martin A, Owen C Peter

机构信息

Department of Prosthodontics, School of Oral Health Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.

出版信息

Int J Prosthodont. 2008 Sep-Oct;21(5):413-4.

Abstract

The fracture resistance of acrylic resin and metal-reinforced acrylic resin fixed implant-supported prosthesis cantilever arms to linear vertical compressive forces was determined. Ten superstructures of each type were secured on 5 evenly distributed implants. Force was applied to the cantilever arms 15 mm distal to the distal-most implant, and 2 tests were conducted on each sample. In each sample, fracture of the acrylic resin was noted at the distal-most implant; however, in the nonreinforced samples, the acrylic resin fractured off completely, leaving the implants unaffected. There was no significant difference between the mean fracture value of the nonreinforced samples (679 N) and reinforced samples (628 N).

摘要

测定了丙烯酸树脂和金属增强丙烯酸树脂固定种植体支持的修复体悬臂梁对线性垂直压缩力的抗折性。每种类型的十个上部结构固定在五个均匀分布的种植体上。在最远端种植体远端15毫米处对悬臂梁施加力,每个样本进行两次测试。在每个样本中,丙烯酸树脂在最远端种植体处发生骨折;然而,在未增强的样本中,丙烯酸树脂完全折断,种植体未受影响。未增强样本(679 N)和增强样本(628 N)的平均骨折值之间没有显著差异。

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