钛微弧氧化处理后的抗菌性能

Antibacterial Properties of Titanium with MAO Treatment

摘要:

通过微弧氧化处理后，钛表面形成一层氧化层，并且氧化层内含有F-、Cl- 和I-, 然后进行细菌粘附试验。结果表明：在种植体周围的常见菌群中，不管是需氧菌还是兼性厌氧菌，钛经过表面改性后均有一定的抗菌作用, 同时含有F-、Cl-和I-，更增加其抗菌性能。不同的晶相结构，其抗菌性能不同，在低电压时，形成的主要是锐钛矿型二氧化钛，其抗菌性能较优。

Abstract:

An oxide layer was formed on the surface of Ti after micro-arc oxidation (MAO) treatment, which contained F-, Cl- and I-. Then the bacterial adhesion test was carried out. The results show that the titanium after surface modification by MAO has certain antibacterial activity to the common flora around the implant, whether they are aerobic or facultative anaerobic bacteria. At the same time, the F-, Cl- and I- ions in the oxide layer improve antibacterial properties further. Different crystalline structures result in different antibacterial properties. Under low voltage, the antibacterial properties of Ti are better due to the main product of anatase TiO2.