Effects of solvents on the early stage stiffening rate of demineralized dentin matrix

Autor(es)

Otsuki, M. ; Pashley, D. H. ; Tay, F. R. ; Carvalho, R. M. ; Garcia. F. C. P. ^[5]

• Tipo de documento: Artigo Científico
• Fonte: Journal of Dentistry; v. 33, n. 5, p. 371-377, maio 2005.
• Área do conhecimento: Ciências da Saúde - Odontologia
• Assunto(s): Materiais dentários Dentina Colágeno Metanol

Resumo

The aim os this work was to monitor the stiffening rate of demineralized dentin matrix at the early stages after exposure to different neat solvents. Regression analysis showed that E increased significantly with time in all water-free solvents (R2=0.8-0.99). Stiffening rate was higher for acetone (0.9 MPa/min) and ethanol (0.8 MPa/min), intermediate for air (0.7 MPa/min), methanol (0.6 MPa/min) and propanol (0.5 MPa/min), lower for HEMA (0.2 MPa/min) and practically none for water (0.07 MPa/min) with p<0.05. The solvent-induced stiffening rate of demineralized dentin matrix is both time and solvent-dependent. The ability of solvents to promptly stiffen the demineralized dentin matrix may be important in maintaining the resin-infiltrated matrix expanded during the solvent evaporation stage of resin bonding. (AU)

• Processo FAPESP: 02/06682-1 - Avaliação da resistência de união de sistemas adesivos hidrofílicos e hidrofóbicos à dentina tratada com solventes anidros
• Beneficiário: Ricardo Marins de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular