CN102631291B - 高性能医用复合材料 - Google Patents

高性能医用复合材料 Download PDF

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CN102631291B
CN102631291B CN201110289094.5A CN201110289094A CN102631291B CN 102631291 B CN102631291 B CN 102631291B CN 201110289094 A CN201110289094 A CN 201110289094A CN 102631291 B CN102631291 B CN 102631291B
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medical high
performance composite
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CN102631291A (zh
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廖书辉
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Hubei Suizhou Shuangxing Biological Science & Technology Co., Ltd.
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HUBEI SUIZHOU SHUANGXING BIOLOGICAL SCIENCE & TECHNOLOGY Co Ltd
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Abstract

本发明涉及一种以聚氨酯改性环氧树脂作为主体材料，添加异氰酸酯调整树脂弹性模量的新型高性能医用复合材料，其核心指标弯曲强度1200MPa，增强了X射线阻射性。本发明所要解决的问题是克服现有技术的不足，提供一种配方合理，性能稳定，工艺简单的牙根桩树脂材料，其应用于桩核和牙根提供固定或桩核修复的义齿植入桩生产制造。

Description

高性能医用复合材料
技术领域
本发明为一种以聚氨酯改性环氧树脂作为主体材料，添加异氰酸酯调整树脂弹性模量的新型高性能医用复合材料。其特征为主要配方成份聚氨酯：50％-65％，环氧树脂20％-25％，异氰酸酯10％-30％。其核心指标弯曲强度1200MPa，增强了X射线阻射性，应用于桩核和牙根提供固定或桩核修复的义齿植入桩生产制造。
背景技术
生物医学材料应用广泛，仅高分子材料，全世界在医学上应用就有90多个品种，1800余种制品，西方发达国家在医学上消耗的高分子材料每年以10％～20％的速度增长。随着现代科学的发展，尤其是生物技术的重大突破，生物材料应用将会更加广泛。
根管桩在临床治疗中主要是为桩核和牙冠提供固定或桩核的修复。使用时将根管桩插入已经过根管治疗的根管内，通过粘固剂与根管内壁牢固连接，形成桩核和牙冠固定的基础，同时改变牙根的应力分布状态，减少牙根的折断发生可能性。
在临床上使用的牙科根管桩包括预成根管桩和定制的铸造根管桩，预成根管桩包括非金属根管桩(玻璃纤维、碳纤维、陶瓷等)和金属根管桩(合金、纯钛等)。
残根残冠的保守治疗常常需要桩核修复，传统金属桩修复存在一些缺点：例如金属的腐蚀性容易导致牙龈颜色改变；金属高弹性模量容易产生应力集中，导致根折；随着核磁共振成像技术的应用，金属传导性回导致即刻射频场发生变形，进而造成图像的扭曲变形；金属桩核的金属色及不透明性影响前牙全瓷冠的配色及美观。
比较而言，纤维桩由聚合物树脂基质包绕，碳纤维和石英纤维组成，弹性模量接近牙本质，具有比金属更好的传递和分散咬合力的功能，降低了根折的机率，有利于保护剩余的牙体组织。所以说是一种新型的加强牙根强度、保存牙根、桩冠修复材料，其优点是弹性模量好、轻便、强度高、色泽好，在牙齿修复中占据先天优势，其应用范围广，操作简单、快速，减少了患者复诊的次数。适用于牙冠大面积缺失，固定义齿的固定位，畸形牙、错位牙或扭转牙等。
发明内容
我公司针对国内纤维桩原料和制造技术的问题，研究了国内外纤维桩的发展研究现状，从树脂源头进行了大量工作，解决了材料弯曲强度和脆性等综合性问题，通过异氰酸酯改性，找到了一个相对比较高的专用树脂，并对增强树脂材料进行了科学配比和选择，同时对工艺进行优化，促进了材料的稳定，增强了产品使用安全性。本材料创新点：一是增补了国内空白，在产业化方面，医用复合材料主要依靠进口，产品技术结构和水平基本上处于初级阶段；二是改医用复合材料达到了国际先进水平，内控核心指标弯曲强度达到了1200mpa，力学性能超过国内产品的20％-40％，更为突出的是X射线阻射性大为改进，突破了纤维根管桩产品的应用瓶颈；三是具有较强的市场竞争力，材料价格低廉，市场前景广阔，具有较强的市场竞争力。
具体实施内容：
聚氨酯：5350g；环氧树脂：2180g；异氰酸酯：2570g。

Claims (1)

1.一种高性能医用复合材料，其特征在于：以聚氨酯改性环氧树脂作为主体材料，添加异氰酸酯调整树脂弹性模量，主要配方成份：聚氨酯：50％-65％，环氧树脂20％-25％，异氰酸酯10％-30％，其核心指标弯曲强度1200MPa，增强了X射线阻射性，应用于桩核和牙根的固定或桩核修复的义齿植入桩生产制造。
CN201110289094.5A 2011-09-27 2011-09-27 高性能医用复合材料 Active CN102631291B (zh)

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CN108042372A (zh) * 2017-12-20 2018-05-18 江苏省健尔康医用敷料有限公司 医用复合树脂充填材料

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WO2005027857A1 (fr) * 2003-09-05 2005-03-31 Rhodia Chimie Composition dentaire polymerisable et a haute teneur en charge
CN101219894A (zh) * 2008-01-08 2008-07-16 上海大学 一种可切削氧化锆/磷酸镧全瓷口腔修复体材料的制备方法

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