Effect of different EGTA concentrations on dentin microhardness
Braz. dent. j
;
13(3): 188-190, 2002.
Artigo
em Inglês
| LILACS, BBO
| ID: lil-338541
RESUMO
The effect of 1 percent, 3 percent and 5 percent EGTA (ethylene glycol-bis-(b-amino-ethyl ether) N,N,N´,N´-tetra-acetic acid) on the microhardness of root dentin of the cervical third of human teeth was studied. Five newly extracted maxillary incisors were sectioned transversely at the cementoenamel junction, and the crowns were discarded. The roots were embedded in blocks of high-speed polymerized acrylic resin and cut transversely into 1-mm sections. The second section of the cervical third of the root of each tooth was sectioned and divided into four parts. Each part was placed on an acrylic disc that was used as a base for microhardness measurement. Fifty microliters of 1 percent EGTA, 3 percent EGTA, or 5 percent EGTA were applied to the dentin surface. Deionized and distilled water was used as control. Dentin microhardness was then measured with a load of 50 g for 15 s. Statistical analysis showed that the three concentrations of the chelating solution EGTA significantly reduced dentin microhardness when compared with water (ANOVA, p<0.01), and that there was a statistically significant difference among the three solutions (Tukey test, p<0.05)
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Irrigantes do Canal Radicular
/
Técnicas In Vitro
/
Quelantes
/
Ácido Egtázico
/
Dentina
Limite:
Humanos
Idioma:
Inglês
Revista:
Braz. dent. j
Assunto da revista:
Odontologia
Ano de publicação:
2002
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
University of Ribeirão Preto/BR
/
University of São Paulo/BR
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