Influence of acid etching on shear strength of different glass ionomer cements
Braz. j. oral sci
; 12(1): 11-15, jan.-mar. 2013. ilus, tab
Article
em En
| LILACS, BBO
| ID: lil-671925
Biblioteca responsável:
BR97.1
ABSTRACT
Aim:
To assess the influence of dental etching on the shear strength of different glass ionomer cements.Methods:
The crown of 60 bovine incisors was prepared to obtain a flat, smooth surface, were attached to a PVC tube and randomly divided into six groups Group 1 Riva Self Cure without etching; Group II Riva Self Cure with pre-etching; Group III Maxxion R without etching; Group IV Maxxion R with pre-etching; Group V KetacMolar Easymix without etching; and Group VI KetacMolar Easymix with pre-etching. Etching was performed with 10% polyacrylic acid for 30 s. A standardizing device was used for preparation of the test specimens (SBS Test Method). Following preparation, the specimens were stored in distilled water at 37º Cfor 24 h. The shear test was performed on a Kratos universal testing machine at a crosshead speed of 0.5 mm/min. The specimens were then viewed under a stereomicroscope at a magnification of x90 for analysis of fractures.Results:
The results revealed that pre-etching increased the shear strength of Riva glass ionomer cement (SDI) alone, where as no statistically significant differences were found with regard to the other materials tested.Conclusions:
Pre-etching with 10% polyacrylic acid for 30 s increased the shear strength of Riva glass ionomer cement.
Texto completo:
1
Índice:
LILACS
Assunto principal:
Cimentos Dentários
/
Resistência ao Cisalhamento
/
Dentina
Limite:
Animals
Idioma:
En
Revista:
Braz. j. oral sci
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article