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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Fabrication and physical properties of glass‐fiber‐reinforced thermoplastics for non‐metal‐clasp dentures
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Fabrication and physical properties of glass‐fiber‐reinforced thermoplastics for non‐metal‐clasp dentures

机译：用于非金属扣牙本质的玻璃纤维增强热塑性塑料的制造和物理性质

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Abstract Recently, non‐metal‐clasp dentures (NMCDs) made from thermoplastic resins such as polyamide, polyester, polycarbonate, and polypropylene have been used as removable partial dentures (RPDs). However, the use of such RPDs can seriously affect various tissues because of their low rigidity. In this study, we fabricated high‐rigidity glass‐fiber‐reinforced thermoplastics (GFRTPs) for use in RPDs, and examined their physical properties such as apparent density, dynamic hardness, and flexural properties. GFRTPs made from E‐glass fibers and polypropylene were fabricated using an injection‐molding. The effects of the fiber content on the GFRTP properties were examined using glass‐fiber contents of 0, 5, 10, 20, 30, 40, and 50 mass%. Commercially available denture base materials and NMCD materials were used as controls. The experimental densities of GFRTPs with various fiber contents agreed with the theoretical densities. Dynamic micro‐indentation tests confirmed that the fiber content does not affect the GFRTP surface properties such as dynamic hardness and elastic modulus, because most of the reinforcing glass fibers are embedded in the polypropylene. The flexural strength increased from 55.8 to 217.6 MPa with increasing glass–fiber content from 0 to 50 mass%. The flexural modulus increased from 1.75 to 7.42 GPa with increasing glass–fiber content from 0 to 50 mass%, that is, the flexural strength and modulus of GFRTP with a fiber content of 50 mass% were 3.9 and 4.2 times, respectively, those of unreinforced polypropylene. These results suggest that fiber reinforcement has beneficial effects, and GFRTPs can be used in NMCDs because their physical properties are better than those of controls. ? 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2254–2260, 2017.
机译：摘要最近，由热塑性树脂如聚酰胺，聚酯，聚碳酸酯和聚丙烯制成的非金属 - 扣义齿（NMCD）已被用作可拆卸的部分假牙（RPD）。然而，由于它们的刚性低，使用这种RPD可以严重影响各种组织。在这项研究中，我们制造了用于RPD的高刚性玻璃纤维增​​强热塑性塑料（GFRTPS），并检查其物理性质，如表观密度，动态硬度和弯曲性能。使用注塑成型制造由电子玻璃纤维和聚丙烯制成的GFRTP。使用玻璃纤维含量为0,5,10,20,30,40和50质量％的玻璃纤维含量检查纤维含量对GFRTP性质的影响。市售的义齿基材和NMCD材料用作对照。具有各种纤维内容的GFRTP的实验密度与理论密度同意。动态微压痕试验证实，纤维含量不会影响GFRTP表面性质，例如动态硬度和弹性模量，因为大多数增强玻璃纤维嵌入聚丙烯中。弯曲强度从55.8增加到217.6MPa，玻璃纤维含量增加0至50质量％。弯曲模量从1.75升至7.42GPa，随着玻璃纤维含量的增加，玻璃纤维含量增加到50质量％，即纤维含量为50质量％的GFRTP的弯曲强度和模量分别为3.9和4.2倍，不良胁迫的聚丙烯。这些结果表明，纤维增强具有有益的效果，而GFRTP可以用于NMCD，因为它们的物理性质优于控制器。还2016 Wiley期刊，Inc。J生物保解率B部分：Appl Biomater，105B：2254-2260,2017。

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