Effects of dehydration on modulus of elasticity of demineralized human dentin
Rev. Fac. Odontol. Bauru
; 4(1/2): 1-7, jan.-jun. 1996. ilus
Article
em En
| LILACS, BBO
| ID: lil-222550
Biblioteca responsável:
BR28.1
ABSTRACT
Dentin bars of approximately 0.7 X 0.7 X 5.0 mm were obtained from the crown of human third molars. The specimens had their ends covered with nail varnish and were subjected to demineralization in 0.5 M EDTA for 72 hours. The specimens were stressed in tension, griped by their mineralized ends. The load/displacement data was transformed to stress/strain data using the original cross-sectional area and the length of the demineralized area (gauge-length). A low strain (0-2%) and the maximum moduli were calculated for specimens tested in water (control), dehydrated in acetone and in HEMA and air-dried. All dehydration procedures caused significant stiffening of the collagen netword. Air-dried specimens were the most stiffer, followed by acetone-dehydrated and HEMA-dehydrated specimens. The stiffening effect of organic solvents on acid-etched dentin, may alter the permeability of the collagen network to adhesive resins
Buscar no Google
Índice:
LILACS
Assunto principal:
Desmineralização do Dente
/
Permeabilidade da Dentina
/
Elasticidade
Limite:
Humans
Idioma:
En
Revista:
Rev. Fac. Odontol. Bauru
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
1996
Tipo de documento:
Article