Quantitative evaluation of marginal leakage in resin composite restaurations, using different bulk-fill resin composites as an intermediary or filling material

• Grant number: 15/24373-6
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): March 01, 2016
• Effective date (End): December 31, 2016
• Field of knowledge: Health Sciences - Dentistry - Dental Clinics
• Principal Investigator: Flávio Henrique Baggio Aguiar
• Grantee: Isabela de Campos Serain
• Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil

Abstract

This study will evaluate the effect of diferent bulk fill composite resin and thermal and mechanical loading cycling (TMC) on microleakage in composite resin restorations. One hundred cavities will be prepared (1,5 X 4 X 5 mm) and randomly divided i 10 groups (n=10) according to bulk fill composite resin and TMC. Following the restorative procedures and thermocycling, the samples will immersed in methylene blue for 12 hours. The samples will be ground and the powder prepared for analysis in an absorbance spectrophotometer. All the results will be statistically analyzed.