Shear bond strength of low shrinkage on primary dentin

• Grant number: 12/00167-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: July 01, 2012
• End date: June 30, 2013
• Field of knowledge: Health Sciences - Dentistry - Pediatric Dentistry
• Principal Investigator: Maria Cristina Borsatto
• Grantee: Olívia Marcela Fernandes Bonizio
• Host Institution: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

The aim of this study will be to assess the shear bond strength of low shrinkage composite resins on deciduous dentin. 45 primary dentin blocks will be randomly assigned to 3 groups (n=15) according the restorative system used at restorative process: G1 - Single Bond Adhesive System + Filtek Z250 ; G2 - Silorane Adhesive System + Filtek Silorane; G3 - UniFil Adhesive System + Kalore. After 24 hours in distilled water, shear bond strength will be tested at a crosshead speed of 0.5 mm/minute. Fractured specimens will be examined with an X40 stereomicroscope to assess the failure modes. For data analysis the MPa values will be used.