Implant surface design for improved implant stability - A study on Ti6Al4V dense and cellular structures produced by Selective Laser Melting

被引：46
|
作者：
Bartolomeu, F. [1 ]
Costa, M. M. [1 ]
Gomes, J. R. [1 ]
Alves, N. [2 ]
Abreu, C. S. [1 ,3 ]
Silva, F. S. [1 ]
Miranda, G. [1 ]
机构：
[1] Univ Minho, Ctr Microelect Mech Syst CMEMS, UMinho, Campus Azurem, P-4800058 Guimaraes, Portugal
[2] Polytech Inst Leiria, Ctr Rapid & Sustainable Prod Dev, Rua Gen Norton de Matos, P-2411901 Leiria, Portugal
[3] ISEP, Porto Super Engn Inst, Phys Dept, Porto, Portugal
来源：
TRIBOLOGY INTERNATIONAL | 2019年 / 129卷
关键词：
Ti6Al4V; Selective laser melting; Implant surface design; Static and dynamic friction; ACID-ETCHED SURFACE; MECHANICAL-PROPERTIES; TITANIUM IMPLANTS; PORE-SIZE; IN-VIVO; BIOMEDICAL APPLICATIONS; TRIBOLOGICAL BEHAVIOR; DENTAL IMPLANTS; BONE INGROWTH; ALLOYS;
D O I：
10.1016/j.triboint.2018.08.012
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Focusing on implant surface design, aiming to improve implant primary stability, SLM technology was explored to produce dense and cellular structured Ti6Al4V specimens. The SLM specimens and also a commercial casted/forged Ti6Al4V group, were sandblasted and acid-etched to obtain a moderate surface roughness topography, typically used in implant manufacturing. Ti6Al4V-bone interaction and tribological performance were assessed by performing sliding tests aiming to replicate in some extension the insertion of a hip implant. The results shown a 24 and 32% higher kinetic friction coefficient values when comparing the cellular structures with the conventional casted/forged Ti6Al4V. These friction results together with a high amount of adhered bone are promising evidences of a higher efficiency of Ti6Al4V cellular structures for enhancing implant stability.
引用
收藏
页码：272 / 282
页数：11
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