fluoride release from bonding sistems:long term study

Paper #102496 Fluoride release from bonding sistems: long term study M.G. GANDOLFI1, S. ZANNA1, C. PRATI2, C. BARONI2, and R. MONGIORGI1, 1Center of Biomineralogy, Crystallography and Biomaterials, University of Bologna, Italy, 2Department of Dental Sciences, University of Bologna, Italy Objectives: The aim of the present study was to evaluate the fluoride releasing from two commercial products (adhesive and composite) using two different analytical techniques. Methods: Ten samples of dental adhesive ONE-UP Bond® F Plus Self-Etching Bonding Agent (Tokuyama Dental Corporation, Tokyo, Japan) and ten samples of composite BEAUTIFIL® Intro set (Shofu Dental Corporation Inc, kyoto, Japan) were prepared by using acrylic moulds with semi-spherical shape (d=10.3 mm, h=4.4 mm). The samples were stored in 55 ml of citric acid solution 0,02 M (pH 2.5) at 37° C. The storage solutions were modified after 7 days, 1,2,3 and 6 months. The obtained solutions were divided into two parts and analyzed for F content using a selective ion-electrode (Orion Research Inc., mod. 940911, Cambride, MA, USA) and a chromatographic column (ICS-90 ion-chromatography system, DIONEX, Sunnyvale, CA, USA). Results: In the table chromatographic and potentiometric analyses respectively. Conclusions: The study shows that the two techniques give quantitative of fluoride releasing data statistically different. The chromatographic technique showed a linear pattern of releasing different from potentiometric technique and the chromatographic technique may consequently be considered more adequate. -------------------------------------------------------------------------------- Abstract ID#: 102496 Password: 991502 Submitter's or presenter's Email: silvano.zanna@unibo.it Program Selection: Dental Materials 6: Polymer-based Materials - Physical Properties and Performance Topic: DM 6 Systematic Review Abstracts Consider for Poster Presentation ONLY: Y The presenter is a Post-graduate student. Keywords: Dental materials, Chemical, Fluoride, Composites, Biomaterials First Author Maria Giovanna Gandolfi, Dr Center of Biomineralogy, Crystallography and Biomaterials, University of Bologna Piazza di Porta San Donato 1 Bologna, 40126 Italy Phone Number: +39 051 2094913 Fax Number: +39 051 2094904 Email: mgiovanna.gandolfi@unibo.it Second Author Silvano Zanna, Dr Center of Biomineralogy, Crystallography and Biomaterials, University of Bologna Piazza di Porta San Donato 1 Bologna, 40126 Italy Phone Number: +39-51-2094908 Fax Number: +39-51-2094904 Email: silvano.zanna@unibo.it Third Author Carlo Prati, MD Department of Dental Sciences, University of Bologna Via San Vitale 59 Bologna, 40125 Italy Phone Number: +39 051 278024 Fax Number: +39 051 225208 Email: carlo.prati@unibo.it Membership Number: P211245 Fourth Author Chiara Baroni Department of Dental Sciences, University of Bologna Via San Vitale 59 Bologna, 40125 Italy Phone Number: +39 051 278024 Fax Number: +39 051 225208 Email: cbaroni@med.unibo.it Fifth Author Presenting Romano Mongiorgi, Ch Center of Biomineralogy, Crystallography and Biomaterials, University of Bologna Piazza di Porta San Donato 1 Bologna, 40126 Italy Phone Number: +39 051 2094915 Fax Number: +39 051 2094904 Email: romano.mongiorgi@unibo.it Membership Number: P197095