Effect of light-curing units in shear bond strength of metallic brackets: an in vitro study
J. appl. oral sci
; 18(1): 68-74, Jan.-Feb. 2010. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-545029
Biblioteca responsável:
BR1.1
ABSTRACT
OBJECTIVES:
To determine the influence of the light curing units on the shear bond strength of orthodontic brackets. MATERIAL ANDMETHODS:
Seventy-two premolars were divided into six groups (n=12) Group I brackets bonded with Transbond and polymerization with halogen light; Group II Transbond and LED; Group III Fuji Ortho and halogen light; Group IV Fuji Ortho and LED; Group V Fuji Ortho, without acid and halogen light; Group VI Fuji Ortho, without acid and LED. The groups were tested to shear strength in a universal testing machine at a crosshead speed of 0.5 mm/min. Data were analyzed statistically by ANOVA and Tukey's test.RESULTS:
The composite resin presented higher shear bond strength than the resin-modified glass ionomer cement (p<0.05). The halogen light and LED sources produced similar shear bond strength (p>0.05).CONCLUSION:
The shear bond strength was influenced by the material but not by the light-curing unit. The use of LED reduced the experimental time by approximately 60 percent, with the same curing efficiency.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Colagem Dentária
/
Braquetes Ortodônticos
/
Ligas Dentárias
/
Cimentos Dentários
/
Lâmpadas de Polimerização Dentária
Tipo de estudo:
Ensaio clínico controlado
Limite:
Humanos
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2010
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Pontifical Catholic University of Rio Grande do Sul/BR