The influence of the photoinitiator system and reducing agents on physical properties of experimental resins photoactivated by LEDs

• Grant number: 13/04241-2
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: July 01, 2013
• End date: July 31, 2016
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Mário Alexandre Coelho Sinhoreti
• Grantee: Dayane Carvalho Ramos Salles de Oliveira
• Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil
• Associated scholarship(s): 14/03028-6 - Optical properties and kinetics of conversion of dental composites made with alternative photoinitiator systems and cured with different light curing units, BE.EP.DR

Abstract

The aim of this study is to evaluate the influence of photoinitiator system and reducting agent on physical properties of experimental composite resins photoatctivated by different LED units. Thus, this study will be separated into two parts: Study A, in which one basic composite resin with Bis-GMA, UDMA, Bis-EMA, TEGDMA, coloidal sílica, barium aluminosilicate glass associated to different photoinitiator systems: CQ, PPD, TPO or BAPO with reducting amine range: DMAEMA, EDMAB, DMOH, DMPOH, TMA, DMPT, DEPT, DABE or sesamin as well as the inclusion of OPPI will be photoactived by Bluephase G2 (Ivoclar Vivadent) to evaluate the influence of the photoinitiator system/reducting agent on color stability and physical properties of the different experimental composite resins. Thereafter, on study B, the experimental composite resins better results on study will be photoactivated by different LED units: Radii Cal (SDI) or Bluephase G2 (Ivoclar Vivadent) to evaluate the influence of the espectral irradiance on the physical properties of the composite resin. The physical-mechanical properties will be tested by conversion degree, sorption, solubility, flexural resistance, elastic modulus, cohesive resistance and color stability by spectrophotometry after accelerated artificial aging. Data for each cement were analyzed by two-way or three-way ANOVA and Tukey test (± =0.05) by SAS 9.1 (SAS Institute, Cary, EUA). (AU)

Scientific publications

(7)

(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)

ROCHA, M. G.; DE OLIVEIRA, D. C. R. S.; CORREA, I. C.; CORRER-SOBRINHO, L.; SINHORETI, M. A. C.; FERRACANE, J. L.; CORRER, A. B.. Light-emitting Diode Beam Profile and Spectral Output Influence on the Degree of Conversion of Bulk Fill Composites. Operative Dentistry, v. 42, n. 4, p. 418-427, JUL-AUG 2017. (13/04241-2)

RAMOS SALLES DE OLIVEIRA, DAYANE CARVALHO; DE MENEZES, LIVIA RODRIGUES; GATTI, ALEXANDRE; SOBRINHO, LOURENCO CORRER; FERRACANE, JACK L.; COELHO SINHORETI, MARIO ALEXANDRE. Effect of Nanofiller Loading on Cure Efficiency and Potential Color Change of Model Composites. Journal of Esthetic and Restorative Dentistry, v. 28, n. 3, p. 171-177, MAY-JUN 2016. (13/04241-2)

DAYANE CARVALHO RAMOS SALLES DE OLIVEIRA; CAMILA BATISTA DA SILVA; BRUNO VILELA MUNIZ; MARIA C. VOLPATO; ANA ROSA COSTA; MARIO ALEXANDRE COELHO SINHORETI. Effect of 4-(N,N-dimethylamino)phenethyl Alcohol on Degree of Conversion and Cytotoxicity of Photo-Polymerized CQ-Based Resin Composites. Brazilian Dental Journal, v. 25, n. 6, p. 538-542, 2014-12-00. (13/04241-2)

DE OLIVEIRA, D. C. R. S.; ROCHA, M. G.; CORRER, A. B.; FERRACANE, J. L.; SINHORETI, M. A. C.. Effect of Beam Profiles From Different Light Emission Tip Types of Multiwave Light-emitting Diodes on the Curing Profile of Resin-based Composites. Operative Dentistry, v. 44, n. 4, p. 365-378, JUL-AUG 2019. (17/22195-9, 16/06019-3, 16/05823-3, 14/03028-6, 17/22161-7, 13/04241-2)

RAMOS SALLES DE OLIVEIRA, DAYANE CARVALHO; SOUZA-JUNIOR, EDUARDO JOSE; DOBSON, ADAM; COSTA CORRER, ANA ROSA; BRANDT, WILLIAM CUNHA; COELHO SINHORETI, MARIO ALEXANDRE. Evaluation of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental dental resin-based materials. Journal of Applied Oral Science, v. 24, n. 6, p. 555-560, NOV-DEC 2016. (13/04241-2)

RAMOS SALLES DE OLIVEIRA, DAYANE CARVALHO; ROCHA, MATEUS GARCIA; CORREA, NO CARLOS; CORRER, AMERICO BORTOLAZZO; FERRACANE, JACK L.; COELHO SINHORETI, MARIO ALEXANDRE. The effect of combining photoinitiator systems on the color and curing profile of resin-based composites. Dental Materials, v. 32, n. 10, p. 1209-1217, OCT 2016. (16/06019-3, 13/04241-2)

RAMOS SALLES DE OLIVEIR, DAYANE CARVALHO; ROCHA, MATEUS GARCIA; GATTI, ALEXANDRE; CORRER, AMERICO BORTOLAZZO; FERRACANE, JACK LIBORIO; COELHO SINHORETI, MARIO ALEXANDRE. Effect of different photoinitiators and reducing agents on cure efficiency and color stability of resin-based composites using different LED wavelengths. Journal of Dentistry, v. 43, n. 12, p. 1565-1572, DEC 2015. (13/04241-2)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

OLIVEIRA, Dayane Carvalho Ramos Salles de. Influence of photoinitiator system and reducing agent on cure efficiency and color stability of experimental resin-based composites using different LED wavelengths. 2016. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba Piracicaba, SP.