Year : 2018

Volume : Volume 9

Issue : Issue 3s

Address for correspondence :
Dr. Shachi Goenka.
shachigoenka@gmail.com

Abstract

Aim:  The purpose of this study was to evaluate the sealing ability of GIC used for sandwich restorations and to assess the effect of acid etching of GIC on micro leakage at GIC- composite interface.  Method: Cavities were prepared on the mesial surface of 30 permanent human premolars, which were randomly divided into three groups (n=10). Group I – control group GIC was applied onto the axial and cervical cavity walls and allowed to set, it was followed by the bonding agent and composite. Group II (Total Etch group) – same as Group I except Acid etching was done on the GIC surface before the bonding agent and composite. Group III ( Self – Etch group ) –  same as Group I except for G-Bond was applied before composite. Specimens were soaked in methylene blue dye solution at room temperature for 24 hours, rinsed under running tap water for one hour, bisected longitudinally and dye penetration was measured following the ISO/TS 11405-2003 standard. Result: No significant difference in microleakage was seen between Group II and Group III whereas significant microleakage was seen in Group I compared to other two groups.

Keywords: Composite, GIC, Sandwich technique.