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Microtensile bond strength to ceramic of a experimental resin cement containig a Onium salt

Grant number: 11/04430-4
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): March 01, 2012
Effective date (End): February 28, 2013
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Giselle Maria Marchi
Grantee:Alan Rodrigo Muniz Palialol
Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil


The aim of this study will be to evaluate the bond strength of experimental resin cements containing different concentrations of diphenyliodonium hexafluorphosphate onium salt in its formulation to a lithium disilicate reinforced ceramic by comparing the values with a dual resin cement Rely X ARC (3M ESPE, St Paul, MN). A model Bis-GMA/TEGDMA comonomer blend (1:1 molar ratio) was obtained and DPI added at concentrations of 0 (control), 0.25, 0.5, 1 and 2 mol% resulting in five experimental resin cements. The photoinitiator system was composed of 1 mol% of camphorquinone and 2 mol% of dimethylaminoethyl methacrylate. 0.1 mol% of hydroxyl butyl toluene was used as an inhibitor and the cements were loaded with a 60% mass fraction of silanated Ba-Al-Si glass fillers. Lithium disilicate ceramic (e.max, Ivoclar Vivadent, Schaan, Liechtenstein) rectangular blocks will be used following the manufacturer's recommendations. The blocks will be made with 3mm x 10 mm x 6 mm of high, wide and thick respectively in order to cure the cement through ceramic. A light-cured resin Filtek Supreme XT (3M ESPE) measuring 5 mm x 10 mm x 6 mm will be used as basis for the procedure and the blocks will be made with a polyvinyl siloxane matrix measuring 10 mm x 10 mm x 6 mm. After the microtensile test, it will be analyzed the pattern of fractures and the values will be tabulated and submited to an appropriate statistical test. (AU)

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
PALIALOL, Alan Rodrigo Muniz. Microtensile bond strength to ceramic of experimental resin cements containing a diphenyliodonium derived salt. 2013. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba Piracicaba, SP.

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