Revisão sistemática e caracterização de hidroxiapatita experimental frente a simulação de variáveis de processamento

Abstract

Bone tissue has regenerative capacity, directly dependent on the size of the bone injury, and in cases of more extensive lesions, there may be need to use bone graft materials that may contribute to this property. We can cite various types of materials, natural or synthetic. Each has advantages and disadvantages in its use, currently the calcium phosphate has excelled, especially hydroxyapatite, which can be used alone or as support for tissue engineering. Thus, this study aimed to evaluate the biocompatibility of the hydroxyapatite in study animals through a systematic review and characterize and evaluate previously synthesized hydroxyapatite microfibers. For the systematic review, the same search strategy was used in the following databases: PubMed (Medline), ISI Web of Science, Lilacs, IBECS, BBO, Scopus and Scielo. Initially they found 4101 potential articles and after removing duplicates and reading the titles and abstracts remaining 75 to read in its entirety. Of these, 35 were included in the review. In the second study, a previously developed hydroxyapatite has been characterized chemically and biologically after being subjected to sterilization processes and inducing metal contamination. Hydroxyapatite has shown satisfactory results in the studies included in the review, particularly when used in larger defects than the critical size. The repair and bone regeneration have significant challenges, making it clear that the successful development of materials for this field of research behind lasting benefits that outweigh potential risks. The hydroxyapatite tested demonstrated chemical stability and ease of sterilization, without contamination present in the composition, which allows the next step of the research animal testing.