Year : 2018

Volume : Volume 8

Issue : Issue 1

Address for correspondence :
Dr. Supriya Singh.
SupriyaSingh@gmail.com

Abstract

Background: Separation of the core build-up material from the prefabricated post is a common problem. In view of the above it is imperative that the clinician now has uncertainties as to which material to select for core build- u p and how to retain a core build-up material on the prefabricated posts to achieve optimum results. Lot of research has been done on the retention of core build- up material to the surface of posts. There are however very few studies to show that surface treatment of post-head could improve retention of new materials with th prefabricated post-head. Objective: The objective of this study was to compare the retention of different core build- up materials with the sandblasted prefabricated metal posts and non sandblasted prefabricated metal posts. Method: A total of Sixty Self Cure Acrylic Resin blocks were fabricated. Out of sixty blocks, thirty blocks with sandblasted prefabricated metal post and thirty blocks with non sandblasted prefabricated metal post were fabricated. Core build- up was done using three different core build- up materials –High Viscosity Glass Ionomer Restorative material, Dual Core Composite Resin Restorative material, Silver Alloy Glass Reinforced Glass Ionomer Restorative material. Tensile bond strength was determined using an Instron Universal testing machine. Result: A statistically significant difference was found between tensile bond strength of sandblasted and non sandblasted prefabricated metal posts and core build-up materials of each group. Conclusion: Tensile bond strength of all three core build- up materials with sandblasted prefabricated metal posts was greater as compared to non sandblasted prefabricated metal posts of each group. Tensile bond strength of High Viscosity Glass Ionomer Restorative material with sandblasted prefabricated metal post was greater as compared to other two core build-up materials.
Keywords: Prefabricated metal post, Core build- up, Sandblasted, Non sandblasted, Tensile bond strength, Post and core