Evaluation of the incorporation of chlorexidine on degree of conversion of experimental composites using MMT as filler

• Grant number: 14/23144-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2015
• End date: November 30, 2016
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Letícia Cristina Cidreira Boaro
• Grantee: Pâmela Adeline Marques
• Host Institution: Universidade de Santo Amaro (UNISA). São Paulo , SP, Brazil

Abstract

The aim of this study is to evaluate the effect of incorporation of chlorhexidine in MMT (montmorilloniteon degree of conversion of experimental composites using MMT as filler. Experimental composites will be prepared using a base of Bis-GMA (bisphenol glycidyl methacrylate) and TEGDMA (Triethylene glycol dimethacrylate) in equal proportions by weight. The photoinitiator system used will be tertiary amine at a concentration of 1% by weight and camphorquinone at 0.8% by weight. As filler will be used MMT (montmrilonita) with or without the addition of chlorhexidine. The composites will be handled in room with yellow lighting to prevent polymerization during the preparation process. The degree of conversion will be determined using an infrared spectrophotometer Fourier transform (FT-IR). The degree of conversion is calculated considering the area under the 6165 cm-1 peak of the polymerized material and uncured. The degree of conversion data will be evaluated according to their normality and homoscedasticity. The overall level of significance adopted which will be 5%.

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)

CIDREIRA BOARO, LETICIA CRISTINA; CAMPOS, LUIZA MELLO; COSTA VARCA, GUSTAVO HENRIQUE; RIBEIRO DOS SANTOS, TAMIRIS MARTINS; MARQUES, PAMELA ADELINE; SUGII, MARI MIURA; SALDANHA, NATHALIA RAMALDES; COGO-MULLER, KARINA; BRANDT, WILLIAM CUNHA; BRAGA, ROBERTO RUGGIERO; et al. Antibacterial resin-based composite containing chlorhexidine for dental. Dental Materials, v. 35, n. 6, p. 909-918, JUN 2019. (14/23144-0, 16/01319-9)