Polimerization process results of two composites chemically distincts: a marginal fit in vitro evaluation

• Grant number: 09/14762-4
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2010
• End date: July 31, 2011
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Ana Flávia Sanches Borges
• Grantee: Ana Flávia Sanches Borges
• Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil

Abstract

The aim of this study is to evaluate the consequences of polymerization process of two chemistry distinct restoration composites on marginal gaps formation. Ten mandibular first molars will be prepared with cavities on mesial and distal faces. Mesial faces will be restored with Clearfil SE Bond + Filtek Z-350 (control group) and distal faces will be restored with Silorane P90 + Filtek Silorane P90. After 24h at 37°C and relative humid storage, the specimens will be evaluated concerning initial marginal gap formation. The margins will be dyed with 1% red acid and propilenglycol, then, the specimens will be photographed and the obtained images will be imported in Image Tool 3.0. software. The gap margin length formation will be calculated as percentage of total marginal length. After that, the specimens will be subjected to the thermo mechanical test at a machine that carries out thermo and mechanical cycles, simultaneously. After the cycles, the specimens will be evaluated concerning final marginal gap formation. Statistical analysis will be used to better data interpretation. (AU)

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)

SANCHES BORGES, ANA FLAVIA; SANTOS, JULIETE DE SOUSA; RAMOS, CARLA MUELLER; ISHIKIRIAMA, SERGIO KIYOSHI; SHINOHARA, MIRELA SANAE. Effect of thermo-mechanical load cycling on silorane-based composite restorations. DENTAL MATERIALS JOURNAL, v. 31, n. 6, p. 1054-1059, NOV 2012. (09/14762-4)