IADR Abstract Archives
Water Sorption and Colour Change of Four Injectable Composite Resins
Objectives: The objective of this study was to investigate the water sorption (Wsp), water solubility (Wsl) and colour stability of four injectable composite resins.
Methods: Four resins in A2 shade were used in this study: G-aenial Universal Injectable (GU), Filtek Supreme Flowable Restorative (FS), Dyract Flowable Compomer Restorative (DF) and Beautiful Injectable (BI). ISO4049:2019 was followed such that for water sorption and solubility, six samples of each resin were prepared and dried before measuring mass (m1) and volume. After DI water immersion for 7 days, mass (m2) of samples were measured and dried again to constant mass (m3). Wsp and Wsl were calculated. For discoloration, five samples for each resin were stored in DI water. CIELAB values with black and white backing were tested by spectrophotometer on 0th (baseline), 7th, 14th and 28th days. Colour difference (△Ebs) and transparency parameter (TP) were analyzed as the parameters of colour stability. Mean value of the results were analyzed by one-way ANOVA and Turkey’s Post Hoc multiple comparsion tests using the software SPSS 27. The significance test level was preset as α=0.05.
Results: Water sorption of all groups except for DF complied with ISO standard, such that GU showed the smallest Wsp. All 4 resins have water solubility complied with ISO standard, such that GU got the smallest Wsl and DF got the largest values. In terms of colour stability, when compared with baseline, DEbs of DF and GU (AT at the 7th and 14th day) at all test points. DEbs of FS and DF were stable while DEbs of BI decreased from 3.452 (>AT) to 2.610 (bs of GU decreased from 1.458 to 1.042, that bears the smallest Perceptibility Threshold (1.2) among all groups. DF had the lowest TP among four resins over the water storage period. TP values of FS, DF and BI groups increased throughout the storage period, while GU group illustrated a decrease in the 7th days and then returned to baseline level at the 28th days.
Conclusions: GU performed the best in water sorption and solubility. GU and DF groups showed better colour stability among 4 types of injectable resins throughout the test period.
Methods: Four resins in A2 shade were used in this study: G-aenial Universal Injectable (GU), Filtek Supreme Flowable Restorative (FS), Dyract Flowable Compomer Restorative (DF) and Beautiful Injectable (BI). ISO4049:2019 was followed such that for water sorption and solubility, six samples of each resin were prepared and dried before measuring mass (m1) and volume. After DI water immersion for 7 days, mass (m2) of samples were measured and dried again to constant mass (m3). Wsp and Wsl were calculated. For discoloration, five samples for each resin were stored in DI water. CIELAB values with black and white backing were tested by spectrophotometer on 0th (baseline), 7th, 14th and 28th days. Colour difference (△Ebs) and transparency parameter (TP) were analyzed as the parameters of colour stability. Mean value of the results were analyzed by one-way ANOVA and Turkey’s Post Hoc multiple comparsion tests using the software SPSS 27. The significance test level was preset as α=0.05.
Results: Water sorption of all groups except for DF complied with ISO standard, such that GU showed the smallest Wsp. All 4 resins have water solubility complied with ISO standard, such that GU got the smallest Wsl and DF got the largest values. In terms of colour stability, when compared with baseline, DEbs of DF and GU (
Conclusions: GU performed the best in water sorption and solubility. GU and DF groups showed better colour stability among 4 types of injectable resins throughout the test period.