多孔钛表面改性处理对比研究

IF 1 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
eJournal of Oral Maxillofacial Research Pub Date : 2020-06-30 eCollection Date: 2020-04-01 DOI:10.5037/jomr.2020.11205
Reiko Kobatake, Kazuya Doi, Yoshifumi Oki, Yusuke Makihara, Hanako Umehara, Takayasu Kubo, Kazuhiro Tsuga
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引用次数: 0

摘要

目的:本研究旨在通过体外研究多孔钛的材料特性和磷酸钙在模拟体液中的沉积情况,研究合适的表面处理方法:本研究旨在通过在模拟体液中对多孔钛的材料特性和磷酸钙沉积进行体内外研究,探究适合多孔钛的表面处理方法:材料:制备了经酸(H2SO4 和 HCl 混合酸)或碱(NaOH)处理的多孔钛。观察表面,测量重量变化率(表面处理后和处理前)和压缩强度。为了研究磷灰石的形成能力,将每个样品浸入模拟体液(SBF)中。进行了表面观察,并测量了重量变化率(浸泡 SBF 前后)和钙化(茜素红染色):结果:酸性组呈现马氏体微尺度粗糙结构,重量和机械强度与其他组相比大幅下降。碱组显示出纳米级的粗糙结构,重量和机械强度相似。在 SBF 中浸泡后,碱组中出现了磷灰石状晶体层。所有样品的重量都有所增加。碱组、酸组和对照组样品的重量变化有显著差异,呈现出以下趋势:碱组(1.6%)>酸组(1.2%)>对照组(0.8%)。碱组样品的钙沉淀值高于酸组和对照组:结论:碱处理是一种适合多孔钛的表面改性方法,在模拟体液中具有良好的机械强度和磷灰石形成能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Comparative Study of Surface Modification Treatment for Porous Titanium.

Comparative Study of Surface Modification Treatment for Porous Titanium.

Comparative Study of Surface Modification Treatment for Porous Titanium.

Comparative Study of Surface Modification Treatment for Porous Titanium.

Objectives: This study was to investigate suitable surface treatment methods for porous titanium by ex vivo study of material properties and calcium phosphate deposition in simulated body fluid.

Material and methods: Porous titanium with acid (H2SO4 and HCl mixed acid) or alkali (NaOH) treatment was prepared. The surfaces were observed, and the weight change ratio (after and before surface treatment) and compression strength were measured. To investigate the apatite formation ability, each sample was immersed in simulated body fluid (SBF). Surface observations were performed, and the weight change ratio (before/after immersing SBF) and calcification (by alizarin red staining) were measured.

Results: The acid group showed a martensitic micro-scale rough structure and the weight and mechanical strength greatly decreased compared to the other groups. The alkali group exhibited a nano-scale roughness structure with similar weight and mechanical strength. Following immersion in SBF, an apatite-like crystal layer in the alkali group was observed. The weight of all samples increased. The change in weight of the samples in the alkali, acid, and control groups were significantly different, showing the following trend: alkali group (1.6%) > acid group (1.2%) > control group (0.8%). Calcium precipitation values were higher in the samples from alkali group than in those from the acid and control groups.

Conclusions: Alkali treatment was found to be a suitable surface modification method for porous titanium, resulting in good mechanical strength and apatite formation ability in simulated body fluid.

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