Surface topography, hardness, and frictional properties of GFRP for esthetic orthodontic wires
Surface topography, hardness, and frictional properties of GFRP for esthetic orthodontic wires
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用于美观正畸钢丝的 GFRP 的表面形貌、硬度和摩擦特性
DOI：
10.1002/jbm.b.33372
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Kasai K.
中科院分区：
文献类型：
--
作者：
Inami T.;Tanimoto Y.;Yamaguchi M.;Shibata Y.;Nishiyama N.;Kasai K.
在我们之前的研究中，通过使用脉冲法制备了由聚碳酸酯和玻璃纤维制成的用于美学正畸丝的玻璃纤维增强塑料（GFRP）。本研究的目的是调查的表面形貌，硬度和摩擦性能的玻璃纤维增强塑料。为了研究纤维直径如何影响表面性质，使用直径为0.45 mm（0.018 in.）加入13 μm（GFRP-13）或7 μm（GFRP-7）玻璃纤维。作为对照，还评价了不锈钢（SS）、钴-铬-镍合金、β-钛（β-Ti）合金和镍-钛（Ni ‐ Ti）合金。在扫描电子显微镜和扫描探针显微镜下，β-Ti样品显示出比其他金属丝和GFRP丝更大的表面粗糙度。动态显微压痕法测得的GFRP丝的动态硬度和弹性模量远低于金属丝（p< 0.05）。GFRP-13和GFRP-7聚合物复合材料托槽的摩擦力分别为3.45 ± 0.49和3.60 ± 0.38 N; GFRP-13和GFRP-7陶瓷托槽的摩擦力分别为3.39 ± 0.58和3.87 ± 0.48 N。对于这两种托槽类型，GFRP丝和镍钛丝的摩擦力几乎是SS、钴铬和β-Ti丝的一半。总之，GFRP-13和GFRP-7之间的表面性能无显著差异;可能是因为两者具有相同的聚碳酸酯基质。我们期望在正畸治疗过程中，GFRP钢丝将提供上级滑动力学，钢丝和托槽之间的摩擦阻力低。© 2015威利期刊公司. J Biomed Mater Res Part B：Appl Biomater，104 B：88-95，2016。
In our previous study, glass‐fiber‐reinforced plastics (GFRPs) made from polycarbonate and glass fiber for esthetic orthodontic wires were prepared by using pultrusion. The purpose of the present study was to investigate the surface topography, hardness, and frictional properties of GFRPs. To investigate how fiber diameter affects surface properties, GFRP round wires with a diameter of 0.45 mm (0.018 in.) were prepared incorporating either 13 μm (GFRP‐13) or 7 μm (GFRP‐7) glass fibers. As controls, stainless steel (SS), cobalt‐chromium‐nickel alloy, β‐titanium (β‐Ti) alloy, and nickel‐titanium (NiTi) alloy were also evaluated. Under scanning electron microscopy and scanning probe microscopy, the β‐Ti samples exhibited greater surface roughness than the other metallic wires and the GFRP wires. The dynamic hardness and elastic modulus of GFRP wires obtained by the dynamic micro‐indentation method were much lower than those of metallic wires (p< 0.05). Frictional forces against the polymeric composite brackets of GFRP‐13 and GFRP‐7 were 3.45 ± 0.49 and 3.60 ± 0.38 N, respectively; frictional forces against the ceramic brackets of GFRP‐13 and GFRP‐7 were 3.39 ± 0.58 and 3.87 ± 0.48 N, respectively. For both bracket types, frictional forces of GFRP wires and NiTi wire were nearly half as low as those of SS, CoCr, and β‐Ti wires. In conclusion, there was no significant difference in surface properties between GFRP‐13 and GFRP‐7; presumably because both share the same polycarbonate matrix. We expect that GFRP wires will deliver superior sliding mechanics with low frictional resistance between the wire and bracket during orthodontic treatment. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 88–95, 2016.