RECOBRIMENTO DE APATITAS “IN VITRO” SOBRE TITÂNIO – INFLUÊNCIA DO TRATAMENTO TÉRMICO

• Autor(a) principal: de, L. C. [UNESP]
• Data de Publicação: 2003
• Outros Autores: de Assis, C. M. [UNESP], Lia Fook, M. V. [UNESP], Dos Santos, M. L. [UNESP], Guastaldi, A. C. [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.26850/1678-4618EQJ.V28.1.2003.P25-31; http://hdl.handle.net/11449/229759
• topic: Biomaterials; Biomimetic process; Coatings; Hydroxyapatite; Titanium

Commercially pure titanium (cp-Ti), and some of its alloys are considered very important in the medical field because of its excellent biocompatibility and mechanical properties. Recently a simple chemical method was introduced to induce the bioactivity of these inert metallic materials. In this work, the biomimetic chemical process has been used to modify the cp-Ti surface with the deposit of a layer of apatite. The main objective consisted in studying the influence of the thermal treatment on the evolution of the crystallinity of the deposited phases. X-ray diffraction and scanning electron microscopy techniques showed that the apatite coatings with thermal treatments between 400 and 600 °C presented low crystallinity similar to the biological apatites. Above 700 °C, the apatite coatings appeared more crystalline, exhibiting a mixture of hydroxyapatite, octacalcium phosphate and magnesium phosphate.