| Grant number: | 13/04321-6 |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| Start date: | August 01, 2013 |
| End date: | July 31, 2014 |
| Field of knowledge: | Health Sciences - Dentistry - Dental Materials |
| Principal Investigator: | Michelle Alexandra Chinelatti |
| Grantee: | Egle Leitão dos Santos |
| Host Institution: | Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil |
Abstract This in vitro study aims to evaluate the microtensile bond strength to dentin sandblasted with Biosilicate®, and analyze the morphology of the adhesive interface. For the microtensile test, 30 bovine incisors will be selected and will have their roots and buccal surfaces separated; following, their enamel surfaces will be ground to expose the coronal dentin. After obtaining the dentin fragments, they will be randomly divided into three groups (n = 10) in accordance with the pre-surface treatment being carried out: a) sandblasting with Biosilicate®; b) microbrush with aqueous suspension of Biosilicate ®; c) microbrush with distilled water (control). Then the dentin surfaces will be restored with adhesive system / composite resin (Adper Single Bond 2 / Filtek Z-250). The sets tooth / resin will be sectioned in order to obtain sticks about 1 mm ², which will be submitted to microtensile test using a universal testing machine (0.5 mm / min, 50 kgf). Data obtained will be analyzed for their distribution to choose the most appropriate statistical method. For morphological analysis in Scanning Electron Microscopy (SEM), 9 dentin fragments (n = 3) will be obtained and restored as described above, in order to observe the morphology of the interface dentin / adhesive system. | |
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