|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.