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Effect of a wetting agent on the properties of a conventional dental composite

Grant number: 18/13189-8
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): January 01, 2019
Effective date (End): December 31, 2019
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Flávio Henrique Baggio Aguiar
Grantee:Pâmela Letícia Pereira
Home Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil


The aim of this in vitro study is to evaluate the physico-mechanical properties of a microhybrid dental composite (Filtek Z250 XT - 3M ESPE) covered by a wetting agent (Modeling Resin - Bisco), submitted to cycles of brushing and staining with red wine. Eighty cylinder-shaped samples (n = 20) will be prepared. Samples will be divided into 4 experimental groups, according to application of wetting agent and performance of brushing cycles. A single composite increment will be placed into a polytetrafluoroethylene cylindrical matrix of 2 mm high. The wetting agent will be applied over the composite and will be light-cured for 20 seconds. The samples will be submitted to evaluation of brightness, color stability, roughness and surface microhardness in two times: 24 hours after sample preparation and after cycles of brushing and immersion in red wine. Data will be submitted to two-way statistical analysis ANOVA and Tukey test.