Comparative Evaluation of Microlekage of Zirconia-Reinforced Glassionomer and Two Conventional Restoratives: An In Vitro Study

Abstract

Background: Dental materials used for permanent restorations are intended to
replace lost and defective dental tissues and be chemically stable and inert in
the oral environment.
Aims and Objectives: To compare and evaluate marginal microleakage of
zirconia-reinforced Glassionomer with two conventional restoratives. To
analyze the microlekage of the cements being tested.
Materials and methods: For testing microlekage, class V, cavities were prepared
on 60 extracted maxillary premolars. Each set of dentition permanent teeth was
divided into 3 groups of 20 specimens each to be restored with selected
restorative material: Group A (Zirconomer), Group B (Hidence, Group C
(Posterior Extra). These teeth were subjected to thermo cycling, dye immersion,
sectioning, and examination under a Stereomicroscope to assess the degree of
microlekage. The scoring was done according to the scoring criteria put
forward by Khera and Chan, which were further tabulated and statistically
analyzed.
Results: Microlekage of 3 groups showed no significant difference.
Statistically analyzed using the one-way ANOVA test and the unpaired test, and
pair-wise comparison was done using the Turkish multiple postdoc procedure.
Conclusion: It can be concluded that Zirconomer-reinforced Glassionomer
proved to be a better restorative material than the other cements used in the
study