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Bleaching of stained resin using nitrogen doped-TiO₂ nanoparticles / 대한치과재료학회지
Korean Journal of Dental Materials ; (4): 175-184, 2019.
Artigo em Inglês | WPRIM | ID: wpr-759675
ABSTRACT
There has been increasing use of the H₂O₂-based teeth bleaching agents. The purpose of this study was to evaluate the bleaching effectiveness of the laser irradiation combined with nitrogen doped-TiO₂ nanoparticles (NPs) on the stained resin. Nitrogen (N) doped-TiO₂ NPs were prepared under sol-gel method. Light absorbance, X-ray diffraction patterns of NPs, and bleaching of methylene blue and stained resins were evaluated. For bleaching of stained resin, NPs-containing gel was used. For irradiation, light of two different wavelengths was used. Unlike TiO₂, N-TiO₂ showed high absorbance after 400 nm. N-TiO₂, which have used TiN as a precursor, showed a new rutile phase at the TiN structure. For methylene blue solution, N-TiO₂ with 3% H₂O₂ resulted in the greatest absorbance decrease after laser irradiation regardless of wavelength. For stained resin test, N-TiO₂ with 3% H₂O₂ resulted in the greatest color difference after laser irradiation, followed by group that used N-TiO₂ without 3% H₂O₂.
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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Estanho / Difração de Raios X / Nanopartículas / Clareadores Dentários / Métodos / Azul de Metileno / Nitrogênio Idioma: Inglês Revista: Korean Journal of Dental Materials Ano de publicação: 2019 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Estanho / Difração de Raios X / Nanopartículas / Clareadores Dentários / Métodos / Azul de Metileno / Nitrogênio Idioma: Inglês Revista: Korean Journal of Dental Materials Ano de publicação: 2019 Tipo de documento: Artigo