Functionalization of glass ionomer by sol-gel method

• Grant number: 15/23724-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2016
• End date: February 28, 2017
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Eduardo José Nassar
• Grantee: Raquel Faleiros Nogueira
• Host Institution: Pró-Reitoria Adjunta de Pesquisa e Pós-Graduação. Universidade de Franca (UNIFRAN). Franca , SP, Brazil

Abstract

Since 1972 when they were reported in the literature for the first time, glass ionomer cements the (CIV) gained popularity in various clinical situations, and have been used very successfully by having advantageous properties as the tooth adhesion capacity due to ion exchange between material and tooth structure, which is unique in dentistry and extreme value. Additionally, the CIV have the additional benefit of continued release fluorine (giving anticariogenic action) as well as low solubility and excellent biocompatibility. However, despite its advantages, they have some disadvantages such as brittleness and lower strength. Significant improvements have been made since the invention of the CIV, and others are necessary in order to strengthen its physical properties. For this reason the present study aims to functionalization of the glass ionomer by the sol-gel process, which with regard to the synthesis routes has received great prominence in relation to other processes, due to its advantages such as use of starting materials high purity, low processing temperatures and a greater tendency of the sol-gel derived bioactivity in presenting superior to those obtained in the conventional process. The alkoxide functionalization with 3- (trimethoxysilyl) propyl methacrylate (MPTS) to improve their physical and mechanical properties while minimizing their deficiencies and enhancing its favorable characteristics over other materials is that the adsorption capacity permanently to the tooth surface and the sustained-release fluorine.