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Morphology Improvement of Sandblasted and Acid-Etched Titanium Surface and Osteoblast Attachment Promotion by Hydroxyapatite Coating
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Morphology Improvement of Sandblasted and Acid-Etched Titanium Surface and Osteoblast Attachment Promotion by Hydroxyapatite Coating
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Sichuan Science and Technology Support Program (2009SZ0070); National Natural Science Foundation of China (30672345, 30271428)

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    摘要:

    噴砂結(jié)合酸洗技術(shù)（SLA）和羥基磷灰石（HA）沉積技術(shù)是2種廣泛用于改善鈦種植體表面特征的方法。本研究中，用一種簡單的沉積方法將一層HA沉積在SLA處理的鈦表面（SLA-Ti）。應(yīng)用掃描電子顯微鏡（SEM）和原子力顯微鏡（AFM）觀察SLA-Ti和HA覆蓋的SLA-鈦（HA-Ti）的表面形貌和測量表面粗糙度。同時(shí)對2種鈦表面的蛋白質(zhì)吸附，成骨細(xì)胞趨化和成骨細(xì)胞附著進(jìn)行分析。結(jié)果表明：SLA-Ti表面布滿大量規(guī)則的微孔，HA-Ti表面在多微孔的背景下覆蓋大量規(guī)則的微顆粒。與SLA-Ti相比，HA-Ti表面的粗糙度較低。2種鈦表面的蛋白吸附均連續(xù)均勻，成骨細(xì)胞趨化也無差異。在試件培養(yǎng)12和24 h后，發(fā)現(xiàn)HA-Ti表面附著的成骨細(xì)胞及成骨細(xì)胞間聯(lián)系比SLA-Ti表面更多。這些研究表明HA涂層改善了SLA-Ti鈦的表面形貌和促進(jìn)了體外成骨細(xì)胞附著。

    Abstract:

    The sandblasting-acid-etched (SLA) technique and hydroxyapatite (HA) deposition are the two methods widely used to improve surface characteristics of titanium implants. In the current study, a layer of HA was deposited on SLA-treated titanium (SLA-Ti) by a simple deposition method. The surface topography and surface roughness of SLA-Ti and HA-coated titanium (HA-Ti) were evaluated using scanning electron microscope (SEM) and atomic force microscope (AFM). Protein adsorption, osteoblast chemotaxis as well as osteoblast attachment on both Ti surfaces were additionally analyzed. The results show that SLA-Ti surface is covered with uniform, multiple micropores, whereas HA-Ti surface is covered with a large number of uniform microparticles under multiple microporous background. In comparison to SLA-Ti, the surface roughness of HA-Ti surface is lower. The protein adsorption on SLA-Ti and HA-Ti surfaces is generally even, and the chemotaxis of osteoblast have no differences. After 12 and 24 h of incubation, more osteoblasts are adhered to the HA-Ti surface and more osteoblast-osteoblast connection is observed on HA-Ti surface compared to SLA-Ti surface. These findings demonstrate that HA coating deposited on SLA-Ti surface improves SLA-Ti surface morphology and promotes osteoblast attachment in vitro.

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孫 旭,楊曉喻,蘇 源,滕敏華,廖 健,牛愛迪,梁 星. Morphology Improvement of Sandblasted and Acid-Etched Titanium Surface and Osteoblast Attachment Promotion by Hydroxyapatite Coating[J].稀有金屬材料與工程,2015,44(1):67~72.[Sun Xu, Yang Xiaoyu, Su Yuan, Teng Minhua, Liao Jian, Niu Aidi, Liang Xing. Morphology Improvement of Sandblasted and Acid-Etched Titanium Surface and Osteoblast Attachment Promotion by Hydroxyapatite Coating[J]. Rare Metal Materials and Engineering,2015,44(1):67~72.]
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  • 收稿日期:2014-03-25
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  • 在線發(fā)布日期: 2015-05-22
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