首页> 外文期刊>European journal of orthodontics >Effect of monomer composition of polymer matrix on flexural properties of glass fibre-reinforced orthodontic archwire.
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Effect of monomer composition of polymer matrix on flexural properties of glass fibre-reinforced orthodontic archwire.

机译:聚合物基体单体组成对玻璃纤维增​​强正畸弓丝弯曲性能的影响。

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摘要

To compare force levels obtained from glass fibre-reinforced composite (FRC) archwires. Specifically, FRC wires were compared with polymer matrices having different dimethacrylate monomer compositions. FRC material (E-glass provided by Stick Tech Ltd, Turku, Finland) with continuous unidirectional glass fibres and four different types of dimethacrylate monomer compositions for the resin matrix were tested. Cross-sectionally round FRC archwires fitting into the 0.3 mm slot of a bracket were divided into 16 groups with six specimens in each group. Glass fibres were impregnated by the manufacturer, and they were initially light-cured by hand light-curing unit or additionally post-cured in light-curing oven. The FRC archwire specimens were tested at 37°C according to a three-point bending test in dry and wet conditions using a span length of 10 mm and a crosshead speed of 1.0 mm/minute. The wires were loaded until final failure. The data were statistically analysed using analysis of variance (ANOVA). The dry FRC archwire specimens revealed higher load values than water stored ones, regardless of the polymer matrix. A majority of the FRC archwires showed higher load values after being post-cured. ANOVA revealed that the polymer matrix, curing method, and water storage had a significant effect (P < 0.05) on the flexural behaviour of the FRC archwire. Polymer matrix composition, curing method, and water storage affected the flexural properties and thus, force level and working range which could be obtained from the FRC archwire.
机译:比较从玻璃纤维增​​强复合材料(FRC)弓丝获得的力水平。具体地,将FRC线与具有不同的二甲基丙烯酸酯单体组成的聚合物基质进行比较。测试了具有连续单向玻璃纤维的FRC材料(E-glass,由Stick Tech Ltd,芬兰Turku提供)和用于树脂基体的四种不同类型的二甲基丙烯酸酯单体组合物。将装配在支架的0.3 mm槽中的横截面圆形FRC弓丝分为16组,每组6个样品。玻璃纤维由制造商浸渍,并且它们首先通过手动光固化装置进行光固化,或者另外在光固化烘箱中进行后固化。 FRC弓丝样品在干燥和潮湿条件下根据三点弯曲测试在37°C下进行测试,跨距为10 mm,十字头速度为1.0 mm / min。电线被加载直到最终失效。使用方差分析(ANOVA)对数据进行统计分析。无论聚合物基质如何,干燥的FRC弓丝样品的荷重值均高于蓄水的荷重。大多数FRC弓丝在后固化后显示出较高的载荷值。方差分析表明,聚合物基体,固化方法和储水量对FRC弓丝的弯曲行为具有显着影响(P <0.05)。聚合物基体组成,固化方法和储水量会影响挠曲性能,从而影响力水平和工作范围,而这可以从FRC弓丝获得。

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