Effect of triphenylantimonium compound on physicochemical properties of experimental resin cements containing onium salt

• Grant number: 14/23317-2
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: March 02, 2015
• End date: March 01, 2016
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Giselle Maria Marchi
• Grantee: Alan Rodrigo Muniz Palialol
• Supervisor: Carmem Silvia Pfeifer
• Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil
• Institution abroad: Oregon Health & Science University, United States
• Associated to the scholarship: 14/02898-7 - Microtensile bond strength to a glass ceramic and properties of experimental resin cements containing a diphenyliodonium derived salt, BP.DR

Abstract

The aim of this study will be to evaluate the triphenylantimonium compound effect on physicochemical properties of experimental resin cements containing different concentrations of diphenyliodonium hexafluorophosphate (DPIHFP) salt. Four experimental resin cements (ERCs) will be prepared using a Bis-GMA/TEGDMA (1:1 molar ratio) base compound and different DPIHFP concentrations of 0, 0.5, 1 or 2 mol%. It will be added to each preformed composite the triphenylantimonium concentrations of 0.25; 0.5; 1 or 2 mol%, resulting in sixteen ERCs. So, it will be performed the ultimate microtensile strength of the ERCs using hourglass specimens (n=10, for each group); degree of conversion and real-time polymerization kinetics will be carried out using near-infrared (NIR) spectroscopy in disc shape specimens (n=5) of 10 mm in diameter and 0.8 mm of thickness; and also water sorption and solubility test that will be done using disc shape specimens (n=5) of 5 mm in diameter and 0,5 mm of thickness. The light curing of all specimens will be performed through a IPS E.max Press ceramic block (10 mm in length x10 mm in wide x 3 mm in thickness) by a Bluephase G2 LED source with power density of 36 J/cm2. The values of each test will be tabulated and submitted to an appropriate statistical test. (AU)