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PH characteristics of self-etching primers in the resin/dentin interdiffusion zone
Ourives, Fernanda; Espejo, Luciana Cardoso; Arana-Chavez, Victor Elias; Luz, Maria Aparecida Alves de Cerqueira.
  • Ourives, Fernanda; s.af
  • Espejo, Luciana Cardoso; s.af
  • Arana-Chavez, Victor Elias; USP. Faculdade de Odontologia. Departamento de Materiais Dentários. São Paulo. BR
  • Luz, Maria Aparecida Alves de Cerqueira; USP. Faculdade de Odontologia. Departamento de Dentística. São Paulo. BR
RPG, Rev. Pós-Grad ; 16(4): 194-200, out.-dez. 2009. tab, ilus
Artículo en Inglés | LILACS, BBO | ID: biblio-855248
ABSTRACT
To investigate the interaction between dentin and self-etching systems with different pH characteristics. Midcoronal occlusal dentin of 12 extracted human molars was exposed and the specimens were randolmly divided into four groups according to the adhesive system used Scotchbond Multipurpose Plus (SB) - control; Optibond Solo Plus Self-Etch (OP) - pH 1.5; Adper Prompt L Pop (PR) - pH 1.0; Clearfil SE Bond (CL) - pH 2.0. The specimens were examinated by scanning electron microscopy (SEM) to compare the typical structures of resin-dentin interaction using a metrical scale draw on the images. The adhesive systems applied produced statistical different hybrid layer thickness (p = 0.049), and the mean values (µm) were SB = 6.13, OP = 1.6, PR = 2.04 and CL = 0.82. The resin tags formation and hybrid layer extension relationship were SB = 1/9.2 µm, OP = 1/8.2 µm, PR = 1/13.1 µm and CL = 1/7.6 µm. The average thickness of hybrid layer was in the inverse ratio to the pH of the adhesive systems studied. The acidity of self-etching adhesives may be considered one of the many factors responsible for the resin-dentin interactions characteristics observed by SEM
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Índice: LILACS (Américas) Asunto principal: Dentina / Concentración de Iones de Hidrógeno Límite: Humanos Idioma: Inglés Revista: RPG, Rev. Pós-Grad Asunto de la revista: Odontología Año: 2011 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: USP/BR

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Índice: LILACS (Américas) Asunto principal: Dentina / Concentración de Iones de Hidrógeno Límite: Humanos Idioma: Inglés Revista: RPG, Rev. Pós-Grad Asunto de la revista: Odontología Año: 2011 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: USP/BR