Comparative assessment of Vera bond, Super cast and Ticonium alloys on the retention ability of resin bonded retainers Dr. Bajoghli F .,1 Dr. Nosouhian S .,1 Dr. Soltani M . 2 1 Assistant Professor, Department of Prosthodontics , School of Dentistry , Isfahan University of Medical Sciences . Isfahan , Iran . 2 Dentist. (Received 5 Dec, 2010 Accepted 15 August, 2011) Abstract Background and Aim : There are several factors which play an important role in the retention of resin bonded retainers (RBRs) such as prothesis design, type of alloy and thickness of retainers. The purpose of this study was to compare the retention of wings made up of Vera bond, Super cast and Ticonium alloys. Materials and Methods : In this experimental study, the samples consisted of fifteen RBR made on 15 metal central incisors and canines (mounted with a distance equal to a lateral incisor tooth) on an acrylic block . The samples were divided into three groups of five with retainers with thicknesses of 0.2mm consisting of three different alloys namely, Vera bond, Super cast and Ticonium. They were cemented with resin cement panavia F. Samples were then placed in instron machine for determining the force needed to separate the retainers. Data were analyzed by one way ANOVA test. Results : Vera bond wings had a tensile bond strength of 35.2440 Kgf whereas Supercast and Ticonium had a tensile bond strength of 24.8520 Kgf and 21.0860 Kgf, respectively. Conclusion : Results showed that the mean retention of RBRs with wings made up of Vera bond alloy was significantly higher than that of Super cast and Ticonium. In addition, the difference between the mean retention of wings made up of Super cast and Ticonium was not statistically different. Key words: Dental prosthesis – Retention – Denture, partial, fixed, Resin bonded – Resin cement Corresponding Author: Dr. Nosouhian S . , Assistant Professor, Department of Prosthodontics , School of Dentistry , Isfahan University of Medical Sciences . Isfahan , Iran . e.mail: nosouhian@dnt.mui.ac .ir |
