Push-out bond strength of glass fiber posts cemented to radicular dentin with dual cure and self-etching resin cements

• Grant number: 13/18598-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): April 01, 2014
• Effective date (End): December 31, 2014
• Field of knowledge: Health Sciences - Dentistry
• Principal Investigator: Flavia Lucisano Botelho Do Amaral
• Grantee: Monique de Medeiros Mendes
• Host Institution: Centro de Pesquisas Odontológicas São Leopoldo Mandic. Faculdade São Leopoldo Mandic (SLMANDIC). Sociedade Regional de Ensino e Saúde S/S Ltda (SRES). Campinas , SP, Brazil

Abstract

The aim of the present study is to evaluate the immediate (48 hours) and long-term (180 days of water storage) push out bond strength of glass fiber posts (GFP) cemented to radicular dentin with different cementing agents. Thirty roots from human canines will have their conducts prepared for GFP (Reforpost #2, Angelus) cementation. Previously to this procedure, GFP will receive 37% acid conditioning (Condac 37, FGM) and silage coupling agent (Prosil/ FGM) application. Roots will be divided into two groups (n=15) according to the cementing agent that will be applied to it: ARC- Dual cure resin cement (RelyX ARC/ 3M ESPE) associated with a dual cure etch-and-rinse adhesive system (Adper Scotch Bond Multi-Uso Plus 3M/ESPE) or U200- Self-etching resin cement (RelyX U200 / 3M ESPE). The manufacturer's instructions will be followed during cementation procedures. After 48 hours, roots will be serially sectioned for push-out test analysis, providing two slices in each root third (cervical, medium, apical), being one tested immediately and the other one stored in distilled water, for 180 days. Push-out bond strength testing will be performed in a Universal Testing Machine (EMIC) with 0.5mm/min crosshead speed. Data will be statistically analyzed considering its distribution. If there is normality of errors distribution and homogeneity of variance, data will be submitted to repeated-measures ANOVA; on the contrary, non-parametric alternatives will be used, both with 5% significance level. The fracture pattern, observed after push-out bond strength test, will be scored and described in percentages.

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)

MENDES, MONIQUE; GOMES FRANCA, FABIANA MANTOVANI; BASTING, ROBERTA TARKANY; TURSSI, CECILIA PEDROSO; BOTELHO DO AMARAL, FLAVIA LUCISANO. Long-term bond strength of fiber posts cement to dentin with self-adhesive or conventional resin cements. JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, v. 31, n. 9, p. 977-987, 2017. (13/18598-0)