Volume 25, Issue 116, October 2021

The effect of Iranian and foreign mouthwashes on discoloration of Fuji II LC glass ionomer (in vitro)

Shapoor Naziri¹, Parisa Sarikhani^2♦, Negin Nasoohi¹, Fateme Zarouni²

¹Department of Operative Dentistry, Islamic Azad University of Medical Sciences, Dental Branch, Tehran, Iran
²Department of pediatric, School of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran

^♦Corresponding author
Department of pediatric, School of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran

ABSTRACT

Introduction & Objective: GIC was first introduced in 1972 by Willson and Kent. It consists of a water-soluble polyacrylic acid and fluoroaluminosilicate glass. When the silicate powder and polymeric liquid are mixed, an acid-base reaction takes place. They had an ion-leachable micro fluoroaluminosilicate glass filler context. To avoid dissolution, phosphoric acid along with carboxylic acid polymer were substituted for polycarboxylate zinc materials Discoloration of cosmetic restorative materials following application of chlorhexidine mouthwash is one of the most important factors influencing the success of restoration. Discoloration of glass ionomer restorations can cause patient dissatisfaction and lead to treatment failure. This study tended to investigate the effect of two types of chlorhexidine mouthwash on discoloration of glass ionomer by spectrophotometry. Materials & Methods: In this experimental study, 15 disc-shaped specimens with a diameter of 10 mm and a thickness of 2 mm were taken from Fuji II LC glass ionomer. The specimens were divided into three groups of 5 for storage in Iranian chlorhexidine mouthwashes 0.12% and foreign Kin gingival and distilled water. The specimens were immersed in the solutions for 12 h. Colorimetry of the specimens was performed by spectrophotometer before and after placing in the solutions. The results were evaluated by ANOVA, Repeated measured, Kruskal-Wallis, Smirnov-Kolmogrov tests. Results: Discoloration rate of glass ionomeric specimens after placement in both types of mouthwash was significant (P˃0.05) and was not clinically acceptable (ΔE≥3.3). There was also no significant difference in discoloration between Iranian and foreign chlorhexidine groups (P = 0.0001). Conclusion: Application of both Iranian and foreign chlorhexidine mouthwashes is not clinically acceptable.

Keywords: discoloration, chlorhexidine mouthwash, glass ionomer, toothcolored restorative materials

Medical Science, 2021, 25(116), 2539-2545

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