Table 4. Means and 95% confident intervals (CIs) for the means of the solubility (%S) tests of the samples after 24 hours, and 7, 14, and 21 days.
| Groups | Solubility (%S) | ||||
|---|---|---|---|---|---|
| 24 hr | 7 d | 14 d | 21 d | Statistical difference | |
| GKetac 0%A | 3.79 (3.50–4.13) | 3.61 (3.43–3.79) | 3.20 (3.00–3.44) | 3.04 (2.61–3.32) | AB7d, AD7d, AF24hr , AF7d , AF14d , AF21d |
| GKetac 0.5%B | 4.02 (3.65–4.25) | 3.99 (3.91–4.04) | 3.59 (3.19–3.61) | 3.40 (3.33–6.06) | BA7d, BC7d, BD7d |
| GKetac 1%C | 3.83 (3.59–4.24) | 3.63 (3.17–3.81) | 3.34 (3.10–3.67) | 3.10 (2.64–3.38) | CB7d, CH7d |
| GKetac 2%D | 3.87 (3.57–4.00) | 3.09 (2.89–3.37) | 2.74 (2.59–3.07) | 2.91 (2.66–3.13) | DA7d, DB7d, DI7d |
| GKetac 5%E | 4.05 (3.48–4.33) | 3.44 (2.67–4.04) | 3.25 (2.67–3.79) | 3.39 (2.90–3.81) | EJ24hr , EJ14d |
| GFuji 0%F | 2.40 (1.94–2.85) | 2.23 (1.32–2.37) | 1.94 (1.57–2.41) | 1.81 (1.32–2.04) | FA24hr , FA7d , FA14d , FA21d |
| GFuji 0.5%G | 10.20 (0.14–16.32) | 10.77 (0.14–16.45) | 10.25 (0.92–16.05) | 10.08 (0.85–15.91) | - |
| GFuji 1%H | 3.62 (2.77–3.93) | 1.95 (1.36–2.59) | 2.59 (2.40–11.86) | 8.85 (1.68–16.19) | HC7d |
| GFuji 2%I | 3.93 (3.29–4.29) | 3.98 (3.44–4.39) | 3.19 (2.45–3.92) | 3.30 (2.22–3.72) | ID7d |
| GFuji 5%J | 0.59 (0.51–3.78) | 1.76 (0.51–4.32) | 0.74 (0.58–2.90) | 0.07 (0.00–3.11) | JE24hr , JEb14d |
Kruskal-Wallis and Mann-Whitney test (p ≤ 0.05): comparisons of different concentrations between glass ionomer cements (GICs) and different concentrations in the same GIC group. Wilcoxon test (p ≤ 0.05): comparisons of difference the period of times in the same GIC group.
Capital letters indicate the different groups. The 2 letters represent the statistic difference between groups: plain letters indicate statistical differences in concentration considering the same GIC and bold letters indicate statistical differences considering the same graphene concentration but comparing GKetac and GFuji. The subscript letters indicate the periods.