CN106587999B - 一种3d打印氧化锆基义齿材料及其应用 - Google Patents

一种3d打印氧化锆基义齿材料及其应用 Download PDF

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CN106587999B
CN106587999B CN201610979137.5A CN201610979137A CN106587999B CN 106587999 B CN106587999 B CN 106587999B CN 201610979137 A CN201610979137 A CN 201610979137A CN 106587999 B CN106587999 B CN 106587999B
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夏阳
章非敏
秦天牧
马俊青
朱朋飞
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Abstract

一种3D打印氧化锆基义齿材料及其应用,基于3D打印陶瓷快速成型技术,所述义齿由氧化锆陶瓷粉和/或羟基磷灰石生物陶瓷粉与粘结剂均匀混合在溶剂中,调配成一种适配于挤出型3D打印机的成型浆料,该浆料通过3D打印机被用来打印个性化义齿的陶瓷胚,打印成型的义齿陶瓷胚经过高温烧结,得到硬度高、耐磨性好的氧化锆义齿,最终得到的义齿经过打磨处理,可应用于患者口腔。

Description

一种3D打印氧化锆基义齿材料及其应用
技术领域
本发明属于医疗器械领域,特别涉及一种3D打印氧化锆基义齿材料及其应用,采用3D打印陶瓷快速成型技术,制造出个性化氧化锆义齿,应用于牙齿缺损修复。
背景技术
义齿是应用于牙齿缺损修复的一种重要方法,金属是目前常见的义齿材料,主要材料有镍铬合金、钛合金、钴铬合金等,且加工方法繁琐,均以蜡型铸造为主要生产工艺,辅助工艺繁琐,工作环境差。此外,一些重金属元素,例如镍、钴等会在口腔环境中发生为微量化学反应,使人体产生过敏反应。且对于一些金属基义齿,其耐磨性差,化学稳定性差,也越来越不适合义齿的制造。近年来,高硬度、高耐磨性的陶瓷牙,越来越引起人们的重视,但是,陶瓷的难加工特点也让陶瓷牙的成本成倍提高。基于3D打印的氧化锆基陶瓷义齿相对于金属义齿保持了陶瓷本身高硬度,高耐磨性,同时还解决了传统陶瓷义齿难加工的缺点。通过3D打印快速成型技术,利用增材制造的方法,将患者的个性化义齿陶瓷胚直接打印出来,缩短了加工周期,提高了精准度。
发明内容
解决的技术问题:本发明提供一种3D打印氧化锆基义齿材料及其应用。利用3D打印技术和陶瓷快速成型技术的联合应用,缩短了加工周期,提高了精准度,且最终得到的义齿具有较高的硬度。
技术方案:一种3D打印氧化锆基义齿材料,基于3D打印陶瓷快速成型技术,所述义齿由氧化锆陶瓷粉和/或羟基磷灰石生物陶瓷粉与粘结剂均匀混合在溶剂中,调配成一种适配于挤出型3D打印机的成型浆料,该浆料通过3D打印机被用来打印个性化义齿的陶瓷胚,氧化锆陶瓷粉与羟基磷灰石生物陶瓷粉质量比为10:0-10:2,所述陶瓷粉(包含氧化锆陶瓷粉和/或羟基磷灰石陶瓷粉)和粘结剂质量比例为10:1-1:1,陶瓷粉和粘结剂占成型浆料的质量比为1%-70%;氧化锆陶瓷粉粒径为500nm,1μm和10μm,分别占氧化锆总质量的1%-99%,1%-99%和1%-99%,三者之和为100%。
上述粘结剂为聚乳酸(PLA),明胶,胶原,羧甲基纤维素,泊洛沙姆407中的至少一种。
上述溶剂为去离子水、酒精、氯仿、丙酮和四氢呋喃中的至少一种,溶剂占义齿成型浆料质量的1%-70%。
任一上述材料在3D打印氧化锆基义齿中应用。
具体应用方法为:将陶瓷粉(包含氧化锆陶瓷粉和/或羟基磷灰石陶瓷粉)与粘结剂均匀混合在溶剂中,调配得到适配于挤出型3D打印机的成型浆料,将个性化的义齿的STL文件导入到3D打印机控制软件中;软件将义齿的文件切成G代码路径;氧化锆浆料按照牙齿的路径挤出形成个性化义齿的陶瓷胚,通过3D打印得到个性化义齿陶瓷胚经干燥后,经过高温烧结,再打磨处理得到氧化锆义齿。
上述浆料满足剪切稀化特性和满足损失模量G”<存储模量G’。
上述高温烧结的温度曲线为:1℃/min升温到400℃;400℃保温2个小时,1℃/min升温到最高温度1420℃,1420℃保温8小时,炉冷到室温。
有益效果:基于3D打印的氧化锆基陶瓷义齿相对于金属义齿保持了陶瓷本身高硬度,高耐磨性,同时还解决了传统陶瓷义齿难加工的缺点。通过3D打印快速成型技术,利用增材制造的方法,将患者的个性化义齿的陶瓷胚直接打印出来,缩短了加工周期,提高了精准度。
附图说明
图1为剪切稀化图。随着剪切速率的增加,粘度越来越小。满足该图性能的浆料才可以被用来做3D打印。
图2为浆料剪切稀化特性存储模量G'和损失模量G"关系图。
图3为陶瓷粉(包含氧化锆陶瓷粉和羟基磷灰石陶瓷粉)含量变化对氧化锆基义齿硬度的影响。
具体实施方式
下面结合具体的实例对本发明做进一步说明。下面的实施例可使本专业技术人员更全面地理解本发明,但不以任何方式限制本发明。
实施例1
步骤1,氧化锆陶瓷粉(成分配比1wt.% 500nm,1 wt.% 1μm,98 wt.% 10μm) 10g,聚乳酸5g,丙酮15g配制成氧化锆浆料。
步骤2,氧化锆浆料装入到打印机料筒中打印成义齿的陶瓷胚;将个性化的义齿的STL文件导入到3D打印机控制软件中;软件将义齿的文件切成G代码路径;氧化锆浆料按照义齿的路径挤出形成个性化义齿的陶瓷胚。
步骤3,对打印好的义齿模型进行干燥,挥发掉多余的丙酮;待丙酮挥发完毕之后,进行烧结,烧结的温度曲线为:1℃/min升温到400℃;400℃保温2个小时,1℃/min升温到最高温度1420℃,1420℃保温8小时,炉冷到室温,烧结完毕的义齿进行打磨抛光。
步骤4,应用维氏硬度测试,得到打印的牙齿的维氏硬度为=13.5GPa
实施例2
步骤1,氧化锆陶瓷粉(成分配比1wt.% 500nm,1 wt.% 1μm,98 wt.% 10μm) 9g,羟基磷灰石陶瓷粉1g,聚乳酸5g,丙酮15g配制得成型浆料。
步骤2,成型浆料装入到打印机料筒中打印成义齿的陶瓷胚;将个性化的义齿的STL文件导入到3D打印机控制软件中;软件将义齿的文件切成G代码路径;成型浆料按照义齿的路径挤出形成个性化义齿的陶瓷胚。
步骤3,对打印好的义齿模型进行干燥,挥发掉多余的丙酮;待丙酮挥发完毕之后,进行烧结,烧结的温度曲线为:1℃/min升温到400℃;400℃保温2个小时,1℃/min升温到最高温度1420℃,1420℃保温8小时,炉冷到室温,烧结完毕的义齿进行打磨抛光。
步骤4,应用维氏硬度测试,得到打印的牙齿的维氏硬度为=9.6GPa
实施例3
步骤1,氧化锆陶瓷粉(成分配比1wt.% 500nm,1 wt.% 1μm,98 wt.% 10μm) 8g,羟基磷灰石陶瓷粉2g,聚乳酸5g,丙酮15g配制得成型浆料。
步骤2,成型浆料装入到打印机料筒中打印成义齿的陶瓷胚;将个性化的义齿的STL文件导入到3D打印机控制软件中;软件将义齿的文件切成G代码路径;成型浆料按照义齿的路径挤出形成个性化义齿的陶瓷胚。
步骤3,对打印好的义齿模型进行干燥,挥发掉多余的丙酮;待丙酮挥发完毕之后,进行烧结,烧结的温度曲线为:1℃/min升温到400℃;400℃保温2个小时,1℃/min升温到最高温度1420℃,1420℃保温8小时,炉冷到室温,烧结完毕的义齿进行打磨抛光。
步骤4,应用维氏硬度测试,得到打印的牙齿的维氏硬度为=6.4GPa
上述实例仅作参考,具有和本发明相似或者从本发明思路出发而延伸的3D打印氧化锆义齿制造方法,均在本发明的保护范围之内。

Claims (7)

1.一种3D打印氧化锆基义齿材料,基于3D打印陶瓷快速成型技术,其特征在于所述义齿由氧化锆陶瓷粉和/或羟基磷灰石生物陶瓷粉与粘结剂均匀混合在溶剂中,调配成一种适配于挤出型3D打印机的成型浆料,该浆料通过3D打印机被用来打印个性化义齿的陶瓷胚,所述浆料满足剪切稀化特性和满足损失模量G”<存储模量G’,氧化锆陶瓷粉与羟基磷灰石生物陶瓷粉质量比为10:0-10:2,所述陶瓷粉和粘结剂质量比例为10:1-1:1,陶瓷粉和粘结剂占成型浆料的质量比为1%-70%;氧化锆陶瓷粉粒径为500nm,1μm和10μm,分别占氧化锆总质量的1%-99%,1%-99%和1%-99%,三者之和为100%。
2.根据权利要求1所述3D打印氧化锆基义齿材料,其特征在于所述粘结剂为聚乳酸(PLA),明胶,胶原,羧甲基纤维素,泊洛沙姆407中的至少一种。
3.根据权利要求1所述3D打印氧化锆基义齿材料,其特征在于所述溶剂为去离子水、酒精、氯仿、丙酮和四氢呋喃中的至少一种,溶剂占义齿成型浆料质量的1%-70%。
4.权利要求1~3任一所述材料在3D打印氧化锆基义齿中应用。
5.根据权利要求4所述的应用,其特征在于将陶瓷粉与粘结剂均匀混合在溶剂中,调配得到适配于挤出型3D打印机的成型浆料,将个性化的义齿的STL文件导入到3D打印机控制软件Adventure-3D中;软件将义齿的文件切成G代码路径;氧化锆浆料按照牙齿的路径挤出形成个性化义齿的陶瓷胚,通过3D打印得到个性化义齿陶瓷胚经干燥后,经过高温烧结,再打磨处理得到氧化锆义齿。
6.根据权利要求5所述的应用,其特征在于所述浆料满足剪切稀化特性和满足损失模量G”<存储模量G’。
7.根据权利要求5所述的应用,其特征在于所述高温烧结的温度曲线为:1℃/min升温到400℃;400℃保温2个小时,1℃/min升温到最高温度1420℃,1420℃保温8小时,炉冷到室温。
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