CN110201227A - 一种3d打印基材的种植体表面抑菌形貌方法 - Google Patents
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Abstract
本发明公开了一种3D打印基材的种植体表面抑菌形貌方法,在3D打印钛片表面,以可生物降解和生物相容性的聚乳酸作为基质,加以珊瑚羟基磷灰石微米颗粒,形成具有生物功能的缓释体系,并将米诺环素作为抗菌药物模型,加载于聚乳酸、聚乳酸‑羟基磷灰石微米颗粒以及羟基磷灰石内部。通过上述方法,在改善种植体表面活性的同时,形成药物的多重加载,在钛种植体表面构建具有生物活性的药物缓释体系,以促进骨整合进程,同时预防种植体相关感染,提高种植成功率。
Description
技术领域
本发明涉及种植体表面处理技术领域,尤其是涉及一种3D打印基材的种植体表面抑菌形貌方法。
背景技术
目前,钛种植体已经越来越广泛的应用于口腔医学领域,并已成为修复牙列缺损和牙列缺失的主要方法。但是钛种植体应用于口腔种植医学领域后,术后感染成为最棘手的术后并发症之一,为此,在钛种植体表面构建具有缓释抗菌特性的功能性涂层成为国内外研究的热点。通过表面改性技术,在钛种植体表面制备含有抗生素(如庆大霉素、环丙沙星)、银离子等抗菌成分的功能性涂层,在发挥促生物活性的同时,提高抑制细菌粘附的能力。但是,现有技术所制备的涂层抗菌药物释放速度的可控性不高。
发明内容
本发明要解决的技术问题是:为了克服上述中存在的问题,提供了一种3D打印基材的种植体表面抑菌形貌方法,其结构合理,具有结构简单、使用方便、工序简单等优点,有效解决抗菌药物释放速度的可控性不高的问题。
本发明解决其技术问题所采用的技术方案是:一种3D打印基材的种植体表面抑菌形貌方法,包括以下步骤:
(1)将预加工成片状的珊瑚研磨成粉,经孔径为75-100μm的筛网过筛,得到珊瑚微米粉末;
(2)去除珊瑚微米粉末中的杂质;
(3)将去除杂质的珊瑚微米粉末与(NH4)2HPO4、KH2PO4置于热液反应器中,在220℃,160Pa,pH10的条件下反应12h,得到羟基磷灰石微米颗粒;
(4)将20mg米诺环素溶于100ml去离子水中制成米诺环素溶液,向米诺环素溶液内缓慢加入20mg羟基磷灰石微米颗粒搅拌均匀制成羟基磷灰石微米颗粒-米诺环素混合液,将羟基磷灰石微米颗粒-米诺环素混合液置于蒸馏机内,在60℃同时磁力搅拌的条件下蒸馏12h,再将所得固体真空干燥,得到羟基磷灰石微米颗粒-米诺环素载药颗粒;
(5)采用3D打印机制备直径15mm,厚2mm的圆形3D打印钛片,依次用丙酮、无水乙醇、去离子水超声清洗10分钟,干燥后备用;
(6)将5g聚乳酸粉末和2g羟基磷灰石微米颗粒-米诺环素载药颗粒,溶于100ml氯仿溶液中,采用浸润涂布法将清洁后的钛片反复浸于溶液中3次,每次15分钟,从而在3D打印钛片表面形成钛-聚乳酸-羟基磷灰石微米颗粒-米诺环素涂层。
进一步的,步骤(2)中将珊瑚微米粉末置于双蒸水中搅拌均匀,使其中的可溶性杂质充分溶解,珊瑚微米粉末-双蒸水混合液经离心后去除上清液,在60℃环境下干燥12h,将所得固体置于丙酮中超声荡洗15min,在70℃环境下干燥12h,再将所得固体在900℃温度下烧结2h,实现去除珊瑚微米粉末中杂质的目的。
本发明的有益效果是:一种3D打印基材的种植体表面抑菌形貌方法,在改善种植体表面活性的同时,形成药物的多重加载,在钛种植体表面构建具有生物活性的药物缓释体系,以促进骨整合进程,同时预防种植体相关感染,提高种植成功率;其结构合理,具有结构简单、使用方便、工序简单等优点,有效解决抗菌药物释放速度的可控性不高的问题。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明所述一种3D打印基材的种植体表面抑菌形貌方法的流程图。
具体实施方式
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图,仅以示意方式说明本发明的基本结构,因此其仅显示与本发明有关的构成。
如图1所示的一种3D打印基材的种植体表面抑菌形貌方法,包括以下步骤:
(1)将预加工成片状的珊瑚研磨成粉,经孔径为75-100μm的筛网过筛,得到珊瑚微米粉末;
(2)去除珊瑚微米粉末中的杂质;
(3)将去除杂质的珊瑚微米粉末与(NH4)2HPO4、KH2PO4置于热液反应器中,在220℃,160Pa,pH10的条件下反应12h,得到羟基磷灰石微米颗粒;
(4)将20mg米诺环素溶于100ml去离子水中制成米诺环素溶液,向米诺环素溶液内缓慢加入20mg羟基磷灰石微米颗粒搅拌均匀制成羟基磷灰石微米颗粒-米诺环素混合液,将羟基磷灰石微米颗粒-米诺环素混合液置于蒸馏机内,在60℃同时磁力搅拌的条件下蒸馏12h,再将所得固体真空干燥,得到羟基磷灰石微米颗粒-米诺环素载药颗粒;
(5)采用3D打印机制备直径15mm,厚2mm的圆形3D打印钛片,依次用丙酮、无水乙醇、去离子水超声清洗10分钟,干燥后备用;
(6)将5g聚乳酸粉末和2g羟基磷灰石微米颗粒-米诺环素载药颗粒,溶于100ml氯仿溶液中,采用浸润涂布法将清洁后的钛片反复浸于溶液中3次,每次15分钟,从而在3D打印钛片表面形成钛-聚乳酸-羟基磷灰石微米颗粒-米诺环素涂层。
在一种实施例中,步骤(2)中将珊瑚微米粉末置于双蒸水中搅拌均匀,使其中的可溶性杂质充分溶解,珊瑚微米粉末-双蒸水混合液经离心后去除上清液,在60℃环境下干燥12h,将所得固体置于丙酮中超声荡洗15min,在70℃环境下干燥12h,再将所得固体在900℃温度下烧结2h,实现去除珊瑚微米粉末中杂质的目的。
在3D打印钛片表面,以可生物降解和生物相容性的聚乳酸作为基质,加以羟基磷灰石微米颗粒,形成具有生物功能的缓释体系,并将米诺环素作为抗菌药物模型,加载于聚乳酸、聚乳酸-羟基磷灰石以及羟基磷灰石内部。通过上述方法,在改善种植体表面活性的同时,形成药物的多重加载,在钛种植体表面构建具有生物活性的药物缓释体系,以促进骨整合进程,同时预防种植体相关感染,提高种植成功率。
本发明所述的一种3D打印基材的种植体表面抑菌形貌方法,其结构合理,一种3D打印基材的种植体表面抑菌形貌方法,在改善种植体表面活性的同时,形成药物的多重加载,在钛种植体表面构建具有生物活性的药物缓释体系,以促进骨整合进程,同时预防种植体相关感染,提高种植成功率;其结构合理,具有结构简单、使用方便、工序简单等优点,有效解决抗菌药物释放速度的可控性不高的问题。
以上述依据本发明的理想实施例为启示,通过上述的说明内容,相关工作人员完全可以在不偏离本项发明技术思想的范围内,进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容,必须要根据权利要求范围来确定其技术性范围。
Claims (2)
1.一种3D打印基材的种植体表面抑菌形貌方法,其特征在于,包括以下步骤:
(1)将预加工成片状的珊瑚研磨成粉,经孔径为75-100μm的筛网过筛,得到珊瑚微米粉末;
(2)去除珊瑚微米粉末中的杂质;
(3)将去除杂质的珊瑚微米粉末与(NH4)2HPO4、KH2PO4置于热液反应器中,在220℃,160Pa,pH10的条件下反应12h,得到羟基磷灰石微米颗粒;
(4)将20mg米诺环素溶于100ml去离子水中制成米诺环素溶液,向米诺环素溶液内缓慢加入20mg羟基磷灰石微米颗粒搅拌均匀制成羟基磷灰石微米颗粒-米诺环素混合液,将羟基磷灰石微米颗粒-米诺环素混合液置于蒸馏机内,在60℃同时磁力搅拌的条件下蒸馏12h,再将所得固体真空干燥,得到羟基磷灰石微米颗粒-米诺环素载药颗粒;
(5)采用3D打印机制备直径15mm,厚2mm的圆形3D打印钛片,依次用丙酮、无水乙醇、去离子水超声清洗10分钟,干燥后备用;
(6)将5g聚乳酸粉末和2g羟基磷灰石微米颗粒-米诺环素载药颗粒,溶于100ml氯仿溶液中,采用浸润涂布法将清洁后的钛片反复浸于溶液中3次,每次15分钟,从而在3D打印钛片表面形成钛-聚乳酸-羟基磷灰石微米颗粒-米诺环素涂层。
2.根据权利要求1所述的一种3D打印基材的种植体表面抑菌形貌方法,其特征在于,步骤(2)中将珊瑚微米粉末置于双蒸水中搅拌均匀,使其中的可溶性杂质充分溶解,珊瑚微米粉末-双蒸水混合液经离心后去除上清液,在60℃环境下干燥12h,将所得固体置于丙酮中超声荡洗15min,在70℃环境下干燥12h,再将所得固体在900℃温度下烧结2h,实现去除珊瑚微米粉末中杂质的目的。
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CN110935061A (zh) * | 2019-12-26 | 2020-03-31 | 中国人民解放军总医院第八医学中心 | 一种3d打印钛椎间融合器及其制备方法和应用 |
CN112870443A (zh) * | 2021-01-27 | 2021-06-01 | 佛山市安齿生物科技有限公司 | 一种牙种植体及其制备方法 |
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