玻璃纤维和芳纶纤维的放置对临时修复材料抗折性的影响。

The effect of placement of glass fibers and aramid fibers on the fracture resistance of provisional restorative materials.

作者信息

Saygili Gülbin, Sahmali Sevil M, Demirel Figen

机构信息

Department of Prosthodontics, Hacettepe University, Faculty of Dentistry, Ankara, Turkey.

出版信息

Oper Dent. 2003 Jan-Feb;28(1):80-5.

PMID:12540123

Abstract

The fracture resistance of provisional restorations is an important concern for the restorative dentist. The fracture resistance of a material is directly related to its transverse strength. Six specimens of similar dimensions were prepared from three resins (PMMA, PEMA and BIS acryl-composite). The resins were reinforced with glass and aramid fibers. The samples were tested immediately after the material set, following seven days of wet storage using three-point compression loading. The results were analyzed with an analysis of variance (ANOVA). Fracture resistance of the specimens was statistically different (p < 0.001) among the materials. Specimens reinforced with glass fibers showed higher transverse strength (149.82 MPa). The fiber reinforcement of resin materials increased the strength values (20-50%). Within the limitations of this study, the transverse strengths of PMMA, PEMA and BIS acryl-resin composites were improved after reinforcement with glass and aramid fibers.

摘要

临时修复体的抗折性是修复牙医关注的重要问题。材料的抗折性与其横向强度直接相关。从三种树脂（聚甲基丙烯酸甲酯、聚甲基丙烯酸乙酯和双丙烯酸酯复合材料）制备了六个尺寸相似的样本。这些树脂用玻璃纤维和芳纶纤维增强。样本在材料凝固后立即进行测试，在湿储存七天后使用三点压缩加载。结果采用方差分析（ANOVA）进行分析。各材料间样本的抗折性存在统计学差异（p < 0.001）。用玻璃纤维增强的样本显示出更高的横向强度（149.82兆帕）。树脂材料的纤维增强使强度值提高了（20 - 50%）。在本研究的局限性内，聚甲基丙烯酸甲酯、聚甲基丙烯酸乙酯和双丙烯酸酯树脂复合材料在用玻璃纤维和芳纶纤维增强后横向强度得到了提高。