Effect of different artificial aging protocols on the fluorescence of composite resins

• Grant number: 13/21760-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2014
• End date: April 30, 2015
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Taciana Marco Ferraz Caneppele
• Grantee: Elielson Nóbrega da Silva
• Host Institution: Instituto de Ciência e Tecnologia (ICT). Universidade Estadual Paulista (UNESP). Campus de São José dos Campos. São José dos Campos , SP, Brazil

Abstract

Objectives: To evaluate the effect of different artificial aging on the fluorescence of resin composites. Material and Methods: Forty-five cylindrical specimens (6mm in diameter and 1mm thick) will be made of each composite resin: microparticulate (Durafill), microhybrid (Empress Direct) and nanoparticle (Filtek Z350). A baseline measurement of fluorescence by direct method using the fluorescence spectrophotometer RF-5301 PC (Shimadzu Corp., Kyoto, Japan) will be performed. After, resin specimens will be distributed into 3 subgroups according to artificial aging protocol to be submitted: Subgroup T - thermocycling (5o and 55oC): 15000 cycles will be performed with fluorescence readings after 5000, 10000 and 15000 cycles; subgroup M - aging by mechanical brushing: 30000 cycles will be performed, with fluorescence readings taken after 10000, 20000 and 30000 cycles; subgroup Q - chemical aging by ethanol: the samples will be immersed in ethanol for 15 days, with readings taken after 5 10 and 15 days of immersion; subgroup L - light aging: resin specimens will be subjected to UV radiation for 216h with fluorescence readings after 72, 144, 216h. Data will be collected and statistically analyzed.

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)

BARBOSA DANTAS, DEBORA CRISTINA; MATHIAS, INGRID FERNANDES; BORGES, ALESSANDRA BUHLER; GOMES TORRES, CARLOS ROCHA; FERRAZ CANEPPELE, TACIANA MARCO. EFFECTS OF ARTIFICIAL ACCELERATED AGING ON THE OPTICAL PROPERTIES OF RESIN COMPOSITES. BIOSCIENCE JOURNAL, v. 34, n. 2, p. 1105-1113, MAR-APR 2018. (13/21760-3)

ELIELSON NÓBREGA DA SILVA; AYLA MACYELLE DE OLIVEIRA CORREIA; EDUARDO BRESCIANI; TACIANA MARCO FERRAZ CANEPPELE. Effect of different artificial aging protocolson fluorescence of resin composites. MATERIA-RIO DE JANEIRO, v. 23, n. 4, 2018-12-06. (13/21760-3)

BARBOSA DANTAS, DEBORA CRISTINA; MATHIAS, INGRID FERNANDES; BORGES, ALESSANDRA BUHLER; GOMES TORRES, CARLOS ROCHA; FERRAZ CANEPPELE, TACIANA MARCO. EFFECTS OF ARTIFICIAL ACCELERATED AGING ON THE OPTICAL PROPERTIES OF RESIN COMPOSITES. BIOSCIENCE JOURNAL, v. 34, n. 2, p. 9-pg., 2018-03-01. (13/21760-3)