Journal
BIOLOGY-BASEL
Volume 10, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/biology10020102
Keywords
titanium implant; chitosan; coating surface; functionalization
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Chitosan, a natural polysaccharide, has been proposed as a biofunctionalization agent to improve the bioactivity of titanium and enhance osseointegration. Studies have shown that chitosan-coated titanium surfaces have greater capacity for bone-titanium integration.
Simple Summary The low bioactivity of titanium limits its applications. The biofunctionalization of its surfaces with certain polymers could improve and accelerate the osseointegration process. Chitosan is a natural polysaccharide derived from chitin, which has been proposed in biomedical engineering. This systematic review evaluated in vivo studies with chitosan-coated titanium implants compared with non-functionalized implants. Chitosan is a natural polysaccharide extracted from the shells of crustaceans that has been proposed as a scaffold in tissue engineering. Certain studies have proven a greater osseointegration of titanium surfaces that are functionalized with chitosan. The MEDLINE, CENTRAL, PubMed, and Web of Science databases were electronically searched for in vivo studies. Seven studies met the inclusion criteria. Animal models, implant site, chitosan incorporation methods, and methods of analysis were emphasized. The selected studies were individually discussed regarding the coatings, osseointegration potential, and suitability of the experimental models used, analyzing their limitations. We concluded that chitosan-biofunctionalized titanium surfaces have greater osseointegration capacity that uncoated control titanium alloys.
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