Effects of nanosecond laser fabrication on bioactivity of pure Titanium
Effects of nanosecond laser fabrication on bioactivity of pure Titanium
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纳秒激光加工对纯钛生物活性的影响
DOI：
10.1016/j.procir.2013.01.048
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Jun Komotori and Hitoshi OHMORI
中科院分区：
文献类型：
--
作者：
Masayoshi Mizutani;Ryo Honda;Ayaka Yuda;Jun Komotori and Hitoshi OHMORI
我们正在开发牙科植入物的表面改性技术，目的是减少实现骨与种植体表面良好粘连所需的时间。利用纳秒激光对工业纯钛盘片进行表面修饰，并对其生物活性进行了评价。激光处理后，Cp钛圆盘表面覆盖有线条。这种处理方法产生了具有金红石和锐钛矿晶体结构的复杂的二氧化钛微细颗粒。这导致在1.5倍浓度的模拟体液中浸泡7天的表面上形成了羟基磷灰石，而在相同条件下浸泡的常规抛光表面没有观察到羟基磷灰石。这表明激光处理提高了CP钛的生物活性，这是骨整合种植体的关键特性。
We are developing surface modification techniques for dental implants with the aim of reducing the time required to realize good adhesion between bone and implant surfaces. A nanosecond Nd:YVO4 laser was used to modify the surfaces of commercially pure titanium (CP Ti) disks and their bioactivities were then evaluated. The surfaces of the CP Ti disks were covered by lines after laser treatment. This treatment created complex microasperities of titania with rutile and anatase crystal structures. This results in the formation of hydroxyapatite on surfaces immersed in 1.5-times concentrated simulated body fluid for 7 days, whereas no hydroxyapatite was observed on conventionally polished surfaces that were immersed under the same conditions. This indicates that laser treatment improves the bioactivity of CP Ti, which is a critical property for osseointegrated implants.