TiO₂ nanotube-based nanotechnology applied to high-viscosity conventional glass-ionomer cement: ultrastructural analyses and physicochemical characterization

Autor(es)

Kantovitz, Kamila Rosamilia ; Carlos, Natalia Russo ; Silva, Ivania Aparecida Pimenta Santos ; Braido, Caroline ; Costa, Bruna Carolina ; Kitagawa, Igor Lebedenco ; Nociti-Jr, Francisco Humberto ; Basting, Roberta Tarkany ; de Figueiredo, Francine Kuhl Panzarella ; Lisboa-Filho, Paulo Noronha

• Tipo de documento: Artigo Científico
• Fonte: ODONTOLOGY; v. 111, n. 4, p. 13-pg., 2023-03-14.

Resumo

This study characterized TiO2 nanotube (TiO2-nt) ultrastructure and morphology, and the physicochemical impact on high-viscosity conventional glass-ionomer cement (GIC). TiO2-nt was synthesized by the alkaline method (n = 3), assessed by scanning (SEM) and transmission electron microscope (TEM), and was added (3%, 5%, 7%-in weight) to KM (Ketac Molar EasyMix (TM)). Analyses included: SEM; Energy-dispersive spectroscopy (EDS); Raman spectroscopy (RAMAN); Setting time with Gillmore needles (ST); Color (Co); Radiopacity (XR); Water sorption (WS); and solubility (SO). Quantitative data were submitted to ANOVA and Tukey's tests (chr = 0.05). External and internal TiO2-nt diameters were 11 +/- 2 nm and 6 +/- 0 nm, respectively. Data analyses showed: (i) TiO2-nt present into KM matrix, with a concentration-dependent increase of Ti levels into KM, (ii) physical interaction between KM and TiO2-nt, (iii) longer initial ST for the 7% group compared to KM and 3% groups (p <= 0.01), (iv) decreased luminosity and yellowness for the 5% and 7% groups, (v) 36% greater radiopacity for the 5% group compared to enamel, dentin, and KM, and (vi) lower SO values for the 5% group, with no significant differences on WS across the groups. TiO2-nt displayed physical interaction with KM matrix, and also modified SO, XR and Co, without affecting ST. This study provides information on the potential impact of TiO2-nt on GIC performance. TiO2-nt may be proposed to boost confidence among dental surgeons in terms of GIC's handling characteristics, success rate and differential diagnostic. (AU)

• Processo FAPESP: 16/13786-0 - Influência de Nova Nanotecnologia nas Propriedades Físico-Químicas-Biológicas do Cimento de Ionômero de Vidro Convencional
• Beneficiário: Kamila Rosamilia Kantovitz
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/14078-8 - Avaliação do efeito da incorporação de nanotubos de dióxido de titânio ao cimento de ionômero de vidro convencional sobre suas propriedades biológicas
• Beneficiário: Kamila Rosamilia Kantovitz
• Modalidade de apoio: Auxílio à Pesquisa - Regular