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Comparison of the color change of the teeth in different iron salt groups subjected to ACC and saline immersion.
| Group | Saline | ACC | Min | Max | Mann-Whitney Statistic | p-Value |
|---|---|---|---|---|---|---|
| Mean Rank | Mean Rank | |||||
| Control | 1.5 | 3.5 | 1 | 5 | 0.001 | 0.083 |
| Ferrous fumarate | 1.5 | 3.5 | 2 | 5 | 0.001 | 0.083 |
| Ferrous ammonium citrate | 1.5 | 3.5 | 1 | 6 | 0.001 | 0.083 |
| Ferrous gluconate | 1.5 | 3.5 | 1 | 7 | 0.001 | 0.083 |
| Ferrous sulfate | 1.5 | 3.5 | 2 | 6 | 0.001 | 0.083 |
