European Journal of Prosthodontics and Restorative Dentistry

Influence of Light-Curing Glaze and Chlorhexidine Gluconate in the Acrylic Resin Properties: An in situ Study

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Cover Date

June 2023

Print ISSN

0965-7452

Electronic ISSN

2396-8893

Vol

31

Issue

2

Abstract

This in-situ study aimed to evaluate the chromatic stability, microhardness, and surface
free energy of chemically activated acrylic resin (CAAR) samples. Eighty CAAR samples
were made and each volunteer (n = 20) received two palatal plates with two sides of groups
(without and with glaze application). The samples were exposed to two conditions: the control
condition (sucrose 30%) and the test condition (sucrose 30% and 0.12% chlorhexidine). The
volunteers used the first palatal device (control condition) for seven days and the second
palatal device (test condition) for another seven days, with a seven-day break between them.
Then, the ∆E00, microhardness, and surface-free energy tests were performed. Analysis of
Variance and the Tukey test were used (α = 0.05). The control group with glaze showed higher
∆E00 compared to the group without the glaze. The test group with glaze had less ∆E00 than
their respective controls. In both periods, when the glaze was applied, higher microhardness
values were found for all groups. Groups with glaze showed lower roughness and higher
surface-free energy than groups without the glaze. The values obtained in this study were
satisfactory, showing the clinical efficacy of glaze and the use of 0.12% CH for maintaining
the physical and mechanical properties of CAAR.

Keywords
Hardness
Surface Property
Acrylic Resin
Temporary Dental Restorations