Sample | Mold | Pre-Demineralization Hardness | Post-Demineralization Hardness | Change in Hardness after Demineralization | Percent Change in Harness (%) |
1 | A | 189.4 | 152.4 | 37 | 19.5354 |
2 | B | 196.9 | 142.3 | 54.6 | 27.7298 |
3 | C | 69.2 | 42.3 | 26.9 | 38.8728 |
4 | A | 170.1 | 116.4 | 53.7 | 31.5697 |
5 | B | 249.6 | 114.4 | 135.2 | 54.1667 |