Clinical performance of high-viscosity glass ionomer and resin composite on occlusal restorations performed without rubber-dam isolation: a one-year randomized controlled split-mouth study

• Main Authors: Hüseyin HATIRLI, Bilal YAŞA, Esra UZER CELIK
• Format: Article
• Language: English
• Published: Gazi University 2021-09-01
• Series: Acta Odontologica Turcica
• Subjects: glass ionomer; dental caries; composite dental resin
• Online Access: https://dergipark.org.tr/tr/pub/gaziaot/issue/64759/796790

Objective: The aim of this randomized, controlled, single-blind, split-mouth and single-center clinical trial was to compare the one-year clinical performances of a high viscosity glass ionomer and a nano-hybrid composite resin on occlusal restorations of mandibular second molar teeth performed without rubber dam isolation. Materials and Method: Occlusal carious lesions on right and left mandibular second molars of 56 patients (26 female, 30 male) were restored according to a split-mouth design in this study. A high viscosity glass ionomer (EQA; Equia Fil, GC) and a nano-hybrid composite resin (GSO; GrandioSo, Voco) were applied according to the manufacturers’ instructions. Clinical evaluation of the restorations was performed according to the FDI criteria at one-week, six-month, and one-year follow-ups. The data were statistically analyzed using Friedman’s ANOVA and Mann-Whitney U tests (α=0.05). Results: After one year, considering functional, esthetic, and biological criteria, the rate of restorations scored with 1, 2, and 3, and were evaluated as successful was 96% in the EQA group, and 100% in the GSO group. GSO showed significantly better surface luster than EQA at both six-month and one-year follow-ups (p<0.05). When one-year alterations within the materials were considered; surface luster, surface discoloration, and marginal adaptation scores significantly increased in the GSO group (p<0.017; Wilcoxon signed-rank test with Bonferroni correction). On the other hand, the scores of surface luster and marginal adaptation significantly increased in the EQA group (p<0.017). Conclusion: One-year performance of high viscosity glass ionomer and nano-hybrid composite on occlusal restorations of mandibular second molars were considered acceptable without rubber-dam isolation.