Publicação

Bio-piezoelectric ceramic composites for electroactive implants—biological performance

Detalhes bibliográficos
Resumo:	Barium titanate (BaTiO<sub>3</sub>) piezoelectric ceramic may be a potential alternative for promoting osseointegration due to its piezoelectric properties similar to bone electric potentials generated in loading function. In this sense, the aim of this in vitro study was to evaluate the cellular response of human osteoblasts and gingival fibroblasts as well as the impact on <i>S. oralis</i> when in contact with BaTiO<sub>3</sub> functionalized zirconia implant surfaces with piezoelectric properties. Zirconia discs with BaTiO<sub>3</sub> were produced and contact poling (piezo activation) was performed. Osteoblasts (hFOB 1.19), fibroblasts (HGF hTERT) and <i>S. oralis</i> were culture on discs. Cell viability and morphology, cell differentiation markers, bacterial adhesion and growth were evaluated. The present study suggests that zirconia composite surfaces with the addition of piezoelectric BaTiO<sub>3</sub> are not cytotoxic to peri-implant cells. Also, they seem to promote a faster initial osteoblast differentiation. Moreover, these surfaces may inhibit the growth of <i>S. oralis</i> by acting as a bacteriostatic agent over time. Although the piezoelectric properties do not affect the cellular inflammatory profile, they appear to enable the initial adhesion of bacteria, however this is not significant over the entire testing period. Furthermore, the addition of non-poled BaTiO<sub>3</sub> to zirconia may have a potential reduction effect on IL-6 mediated-inflammatory activity in fibroblasts.
Autores principais:	Fernandes, Beatriz Ferreira
Outros Autores:	Silva, Neusa; Marques, Joana Faria; Da Cruz, Mariana Brito; Tiainen, Laura Katariina; Gasik, Michael; Carvalho, Óscar Samuel Novais; Silva, Filipe Samuel; Caramês, João; Mata, António
Assunto:	Dental implants Zirconia Piezoelectric properties Barium titanate Osteoblasts Fibroblasts
Ano:	2023
País:	Portugal
Tipo de documento:	artigo
Tipo de acesso:	acesso aberto
Instituição associada:	Universidade do Minho
Idioma:	inglês
Origem:	RepositóriUM - Universidade do Minho

Descrição
Resumo:	Barium titanate (BaTiO<sub>3</sub>) piezoelectric ceramic may be a potential alternative for promoting osseointegration due to its piezoelectric properties similar to bone electric potentials generated in loading function. In this sense, the aim of this in vitro study was to evaluate the cellular response of human osteoblasts and gingival fibroblasts as well as the impact on <i>S. oralis</i> when in contact with BaTiO<sub>3</sub> functionalized zirconia implant surfaces with piezoelectric properties. Zirconia discs with BaTiO<sub>3</sub> were produced and contact poling (piezo activation) was performed. Osteoblasts (hFOB 1.19), fibroblasts (HGF hTERT) and <i>S. oralis</i> were culture on discs. Cell viability and morphology, cell differentiation markers, bacterial adhesion and growth were evaluated. The present study suggests that zirconia composite surfaces with the addition of piezoelectric BaTiO<sub>3</sub> are not cytotoxic to peri-implant cells. Also, they seem to promote a faster initial osteoblast differentiation. Moreover, these surfaces may inhibit the growth of <i>S. oralis</i> by acting as a bacteriostatic agent over time. Although the piezoelectric properties do not affect the cellular inflammatory profile, they appear to enable the initial adhesion of bacteria, however this is not significant over the entire testing period. Furthermore, the addition of non-poled BaTiO<sub>3</sub> to zirconia may have a potential reduction effect on IL-6 mediated-inflammatory activity in fibroblasts.