Influence of acid treatment on surface properties and in vivo performance of Ti6Al4V alloy for biomedical applications

被引:13
|
作者
Fernandes, Daniel J. [1 ]
Marques, Ruy G. [2 ]
Elias, Carlos N. [1 ]
机构
[1] Inst Mil Engn, Biomat Lab, BR-2290270 Rio De Janeiro, RJ, Brazil
[2] Univ Estado Rio de Janeiro, Lab Expt Surg, BR-20561030 Rio De Janeiro, RJ, Brazil
关键词
DENTAL IMPLANTS; ORTHODONTIC ANCHORAGE; BLOOD COMPATIBILITY; TITANIUM-ALLOYS; MINI-IMPLANTS; OXIDE-FILMS; BONE; OSSEOINTEGRATION; PERSPECTIVE; BIOACTIVITY;
D O I
10.1007/s10856-017-5977-5
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
The purpose of this work was to investigate the influence of acid treatment on the surface properties and in vivo performance of titanium grade 5 (Ti6Al4V) alloy. Mini-implants with surface treatment were inserted into New Zealand rabbit tibia for 1, 4 and 8 weeks. SEM analysis showed intercommunicated micropores in acid treated samples. AFM showed micron and sub-micron roughness. The thickness of the titanium oxide layer increased with surface treatment, with a significant reduction of Al and V concentration. Acid treated implant removal torque was larger than without treatment. The implants/bone interface of acid treated implants showed dense adhered Ca/P particles with spreading osteoblasts after 4 weeks and newly formed bone trabeculae after 8 weeks. Analysis of rabbit blood that received treated implant showed lower Al and V contents at all times. Acid treatment improved surface morphology and mechanical stability, which allowed initial events of osseointegration, while Al-V ion release was reduced.
引用
收藏
页数:11
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