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
Article
Dans Anglais
| LILACS
| ID: lil-618147
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.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Huile de ricin
/
Ciments dentaires
Type d'étude:
Guide de pratique
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
J. appl. oral sci
Thème du journal:
Dentisterie
Année:
2012
Type:
Article
/
descriptif de projet
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Univ. Estadual Paulista/BR
/
University of São Paulo/BR
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS