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Influence of different photo-initiators and polymerization accelerators in the chemical and mechanical properties of experimental adhesive systems

Grant number: 13/09989-5
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): September 01, 2013
Effective date (End): February 28, 2015
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Giselle Maria Marchi
Grantee:Diogo Dressano
Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil


The aim of this study is to evaluate the influence of using different initiators (Camphorquinone- CQ and phenylpropanedione- PPD) used alone or in combination; allied or not an accelerator of polymerization (diphenyliodonium-DPI) the chemical and mechanical properties of experimental adhesives.To do this, 24 experimental adhesives are formulated by varying the amount of initiator (0.5 mol%, 1 mol%), the different initiators (CQ, PPD, PPD + CQ) and use the accelerator (DPI). After preparation of the solutions monomeric adhesive systems will be evaluated for sorption and solubility in water using the specimens (5mm diameter, 0.5 mm thick).The modulus of elasticity of the adhesive, as well as the flexural strength is obtained from the test of three-point bending (7mm long, 2 mm wide, 1 mm thick). The tensile strength is evaluated by tensile testing using specimens in the form of bar (1 mm thickness, 1 mm wide, 7mm long). The degree of monomer conversion of adhesive systems will be assessed through a Fourier transform infrared spectroscopy. The data will be analyzed statistically by analysis most appropriate for each test in question. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DRESSANO, DIOGO; PALIALOL, ALAN RODRIGO; XAVIER, THATY A.; BRAGA, ROBERTO R.; OXMAN, JOE D.; WATTS, DAVID C.; MARCHI, GISELLE MARIA; LIMA, ADRIANO FONSECA. Effect of diphenyliodonium hexafluorophosphate on the physical and chemical properties of ethanolic solvated resins containing camphorquinone and 1-phenyl-1,2-propanedione sensitizers as initiators. Dental Materials, v. 32, n. 6, p. 756-764, . (13/09989-5)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
DRESSANO, Diogo. Influence of different photoinitiated systems for chemical and physical properties of experimental simplified adhesives systems. 2015. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba Piracicaba, SP.

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Filed patent(s) as a result of this research project

SISTEMA ADESIVO ODONTOLÓGICO E USO DO MESMO BR1020150304773 - Universidade Estadual de Campinas (UNICAMP) . Giselle Maria Marchi Baron; Alan Rodrigo Muniz Palialol; Adriano Fonseca De Lima; Diogo Dressano - December 2015, 01