Journal
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
Volume 109, Issue 11, Pages 1909-1923Publisher
WILEY
DOI: 10.1002/jbm.b.34835
Keywords
cellular response; osseointegration; PEEK; roughness; surface modification; titanium
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With the increase in life expectancy and aging population, there is a growing need for improved implants. Surface modification of implants through novel techniques has become popular for enhancing osseointegration capability, although the exact features for optimal bone integration remain unknown. Current strategies suggest that combining multiple coating types may be advantageous, but challenges lie in finding a surface modification that utilizes important surface characteristics while maintaining commercial viability.
As life expectancy and the age of the general population increases so does the need for improved implants. A major contributor to the failure of implants is poor osseointegration, which is typically described as the direct connection between bone and implant. This leads to unnecessary complications and an increased burden on the patient population. Modification of the implant surfaces through novel techniques, such as varying topography and/or applying coatings, has become a popular method to enhance the osseointegration capability of implants. Recent research has shown that particular surface features influence how bone cells interact with a material; however, it is unknown which exact features achieve optimal bone integration. In this review, current methods of modifying surfaces will be highlighted, and the resulting surface characteristics and biological responses are discussed. Review of the current strategies of surface modifications found that many coating types are more advantageous when used in combination; however, finding a surface modification that utilizes the mutual beneficial effects of important surface characteristics while still maintaining commercial viability is where future challenges exist.
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