Preparation and antimicrobial assay of ceramic brackets coated with TiO2 thin films / 대한치과교정학회지
The Korean Journal of Orthodontics
;
: 146-154, 2016.
Artigo
em Inglês
| WPRIM
| ID: wpr-111418
ABSTRACT
OBJECTIVE:
Different methods have been utilized to prevent enamel demineralization and other complications during orthodontic treatment. However, none of these methods can offer long-lasting and effective prevention of orthodontic complications or interventions after complications occur. Considering the photocatalytic effect of TiO2 on organic compounds, we hoped to synthesize a novel bracket with a TiO2 thin film to develop a photocatalytic antimicrobial effect.METHODS:
The sol-gel dip coating method was used to prepare TiO2 thin films on ceramic bracket surfaces. Twenty groups of samples were composed according to the experimental parameters. Crystalline structure and surface morphology were characterized by X-ray diffraction and scanning electron microscopy, respectively; film thickness was examined with a surface ellipsometer. The photocatalytic properties under ultraviolet (UV) light irradiation were analyzed by evaluating the degradation ratio of methylene blue (MB) at a certain time. Antibacterial activities of selected thin films were also tested against Lactobacillus acidophilus and Candida albicans.RESULTS:
Films with 5 coating layers annealed at 700℃ showed the greatest photocatalytic activity in terms of MB decomposition under UV light irradiation. TiO2 thin films with 5 coating layers annealed at 700℃ exhibited the greatest antimicrobial activity under UV-A light irradiation.CONCLUSIONS:
These results provide promising guidance in prevention of demineralization by increasing antimicrobial activities of film coated brackets.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Raios Ultravioleta
/
Difração de Raios X
/
Candida albicans
/
Microscopia Eletrônica de Varredura
/
Cerâmica
/
Cristalinas
/
Esmalte Dentário
/
Estética
/
Esperança
/
Lactobacillus acidophilus
Tipo de estudo:
Guia de Prática Clínica
Idioma:
Inglês
Revista:
The Korean Journal of Orthodontics
Ano de publicação:
2016
Tipo de documento:
Artigo
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