Mechanical properties and radiopacity of flowable fiber-reinforced composite

被引:15
|
作者
Garoushi, Sufyan [1 ,2 ]
Vallittu, Pekka [1 ,2 ,3 ]
Lassila, Lippo [1 ,2 ]
机构
[1] Univ Turku, Dept Biomat Sci, Turku, Finland
[2] Univ Turku, TCBC, Inst Dent, Turku, Finland
[3] City Turku Welf Div, Oral Hlth Care, Turku, Finland
关键词
Fiber reinforced flowable composite; Fracture toughness; Radiopacity; VOLUMETRIC SHRINKAGE; FLEXURAL PROPERTIES; RESIN COMPOSITES; CONVERSION; POLYMERIZATION; RESTORATIONS; FILLERS; DEPTH; CURE;
D O I
10.4012/dmj.2018-102
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
The aim was to evaluate the effect of different zirconia discontinuous fiber fractions on radiopacity and other selected properties of glass discontinuous fiber-reinforced flowable composite (Exp-SFRC). Exp-SFRC was prepared by mixing 30 wt% of resin-matrix and 45 wt% of particulate-fillers to 25 wt% of various weight-fractions of E-glass/zirconia discontinuous fiber-fillers (25:0, 20:5, 15:10, 10:15, 0:25 wt%). Flexural strength and fracture toughness were determined for each experimental material. Radiograph of each Exp-SFRC and aluminium step wedge were taken to determine the radiopacity. Degree of conversion and light-transmission were also measured. Scanning electron microscopy was used to evaluate the microstructure of the Exp-SFRC. Analysis of variance (ANOVA) revealed that fractions of E-glasslzirconia discontinuous fiber-fillers had significant effect (p<0.05) on radiopacity and other tested properties of the Exp-SFRCs. Replacing low fraction of E-glass fiber with zirconia fiber-fillers can increase the radiopacity of the fiber reinforced composite without deteriorating the mechanical properties, although, degree of conversion was decreased.
引用
收藏
页码:196 / 202
页数:7
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