Diametral tensile strength and film thickness of an experimental dental luting agent derived from castor oil
J. appl. oral sci
; 20(1): 16-20, Jan.-Feb. 2012. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-618147
Biblioteca responsável:
BR1.1
ABSTRACT
The need to develop new dental luting agents in order to improve the success of treatments has greatly motivated research. OBJECTIVE:
The aim of this study was to evaluate the diametral tensile strength (DTS) and film thickness (FT) of an experimental dental luting agent derived from castor oil (COP) with or without addition of different quantities of filler (calcium carbonate - CaCO3). MATERIAL ANDMETHODS:
Eighty specimens were manufactured (DTS N=40; FT N=40) and divided into 4 groups Pure COP; COP 10 percent; COP 50 percent and zinc phosphate (control). The cements were mixed according to the manufacturers' recommendations and submitted to the tests. The DTS test was performed in the MTS 810 testing machine (10 KN, 0.5 mm/min). For FT test, the cements were sandwiched between two glass plates (2 cm²) and a load of 15 kg was applied vertically on the top of the specimen for 10 min. The data were analyzed by means of one-way ANOVA and Tukey's test (α=0.05).RESULTS:
The values of DTS (MPa) were Pure COP- 10.94±1.30; COP 10 percent- 30.06±0.64; COP 50 percent- 29.87±0.27; zinc phosphate- 4.88±0.96. The values of FT (µm) were Pure COP- 31.09±3.16; COP 10 percent- 17.05±4.83; COP 50 percent- 13.03±4.83; Zinc Phosphate- 20.00±0.12. One-way ANOVA showed statistically significant differences among the groups (DTS - p=1.01E-40; FT - p=2.4E-10).CONCLUSION:
The experimental dental luting agent with 50 percent of filler showed the best diametral tensile strength and film thickness.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Óleo de Rícino
/
Cimentos Dentários
Tipo de estudo:
Guia de prática clínica
Limite:
Humanos
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2012
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Brasil
Instituição/País de afiliação:
Univ. Estadual Paulista/BR
/
University of São Paulo/BR