Comparative evaluation of shear bond strength of three different glass ionomer cement (conventional, zirconium-reinforced and advanced glass hybrid) in primary molars: an in vitro study

Eur Arch Paediatr Dent. 2023 Aug;24(4):491-497. doi: 10.1007/s40368-023-00817-y. Epub 2023 Jun 21.

Abstract

Purpose: The success of restorative materials is largely dependent on their capacity to adhere to the tooth structure and withstand the various forces present in the oral cavity. So, the aim of present study was to evaluate and compare the shear bond strength (SBS) of Type IX Glass Ionomer Cement (GIC), Zirconomer, and Gold Label Hybrid GIC in primary molars.

Methods: Thirty primary molars were selected based on inclusion and exclusion criteria. The molars were polished to provide a flat dentin surface after being inserted in auto polymerizing acrylic resin. The samples were randomly divided into three groups, equally and were bonded to GIC. On the dentin surface, restoration cylinders were made using a plastic mould that had an internal diameter and height of 5 mm and 3 mm, respectively. The cement was manipulated according to the manufacturer's directions through the plastic mould. Then, the samples were stored at room temperature for 10 days to mimic oral conditions. The Universal Testing Machine was used to test SBS. One-way ANOVA and the post hoc Tukey test were used to statistically assess the collected data.

Results: A statistically significant difference was found in all three groups (p < 0.01), with Zirconomer demonstrating highest SBS, followed by Type IX GIC and Gold Label Hybrid GIC.

Conclusion: The SBS value of Zirconomer was better when compared to Type IX GIC and Gold Label Hybrid GIC.

Keywords: Glass Ionomer cement; Materials testing; Primary teeth; Shear strength; Zirconium.

MeSH terms

  • Acrylic Resins / chemistry
  • Dental Bonding*
  • Glass Ionomer Cements*
  • Humans
  • Materials Testing
  • Molar
  • Shear Strength
  • Zirconium

Substances

  • Glass Ionomer Cements
  • Zirconium
  • Acrylic Resins