J Contemp Dent Pract:喷砂和酸蚀表面处理后钛和氧化锆植入材料的血液相容性评估

2019-02-13 MedSci MedSci原创

本研究旨在研究氧化锆和钛植入材料经喷砂和酸蚀(SLA)表面处理后的血液相容性。从制造商采购60个样品,尺寸为10mm×3mm的,其中30个是预制医用级钛(Ti-6Al-4V)和30个烧结氧化锆。使用240至1200pm的碳化硅砂纸来抛光样品表面。用水冲洗表面以在抛光后除去残余颗粒。随后使用蒸馏水进行超声波清洁5分钟。对照样品包括15个样品,每个样品来自钛(A1组)和氧化锆(B1组)。使用150微米

本研究旨在研究氧化锆和钛植入材料经喷砂和酸蚀(SLA)表面处理后的血液相容性。

从制造商采购60个样品,尺寸为10mm×3mm的,其中30个是预制医用级钛(Ti-6Al-4V)和30个烧结氧化锆。使用240至1200pm的碳化硅砂纸来抛光样品表面。用水冲洗表面以在抛光后除去残余颗粒。随后使用蒸馏水进行超声波清洁5分钟。对照样品包括15个样品,每个样品来自钛(A1组)和氧化锆(B1组)。使用150微米粒径的氧化铝颗粒和20%盐酸对剩余的15个样品(组A2和B2)进行喷砂和酸蚀(30秒)处理。之后,在电子显微镜下扫描样品进行表面表征。在将样本暴露于血液之前,计算溶血百分比,凝血酶原,血小板聚集和活化以及凝血酶时间值。向每个样品中加入1mL血液用于测试。记录标本暴露于血液之前和之后的值。使用t检验进行统计学分析。

结果显示,A1(抛光钛)显示暴露后血小板计数(184.67±1.29),白细胞计数(7.27±0.08)和凝血酶时间(10.15±0.34)的平均值最高,而A2(SLA处理的钛)暴露后凝血酶原时间(10.04±0.24)的平均值最高。

总之,该研究结果表明,使用150微米氧化铝颗粒和20%盐酸进行喷砂和酸蚀刻(SLA)的表面处理增加了钛和氧化锆植入材料的表面粗糙度,并且抛光的钛显示出最大的血液相容性。

原始出处:

Rajan A, Sivarajan S, et al., An In Vitro Study to Evaluate and Compare the Hemocompatibility of Titanium and ZirconiaImplant Materials after Sandblasted and Acid-etched Surface Treatment. J Contemp Dent Pract. 2018 Dec 1;19(12):1448-1454.

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    2019-12-21 30397613
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    2019-02-15 jiyangfei