Mean microhardness measurements of tooth enamel as a function of application time (unit: VHN)
Sample | Dry | Wet | 1 hour | 2 hours | 3 hours | 4 hours |
---|---|---|---|---|---|---|
CT-01 | 384.00 | 378.63 | 264.15 | 178.68 | 130.13 | 111.71 |
CT-02 | 372.10 | 356.70 | 238.83 | 186.49 | 99.24 | 98.39 |
CT-03 | 367.32 | 341.00 | 212.75 | 154.69 | 101.68 | 95.17 |
CT-04 | 386.50 | 371.87 | 223.23 | 183.13 | 139.40 | 104.12 |
CT-05 | 342.62 | 347.96 | 237.07 | 154.31 | 104.42 | 93.87 |
CT-06 | 387.50 | 373.14 | 294.20 | 231.33 | 155.94 | 115.62 |
CT-07 | 392.46 | 380.01 | 255.28 | 189.98 | 166.50 | 106.04 |
CT-08 | 338.72 | 342.27 | 231.61 | 193.07 | 117.18 | 99.65 |
CT-09 | 368.22 | 369.30 | 256.95 | 176.63 | 134.35 | 118.00 |
CT-10 | 375.46 | 368.29 | 274.46 | 186.85 | 119.85 | 115.76 |
CT-11 | 395.24 | 363.52 | 304.09 | 223.93 | 161.88 | 124.66 |
CT-12 | 358.42 | 322.27 | 222.82 | 139.70 | 116.84 | 99.80 |
CT-13 | 348.48 | 355.50 | 234.21 | 190.24 | 142.88 | 71.57 |
CT-14 | 345.58 | 334.34 | 246.06 | 222.21 | 143.11 | 99.94 |
CT-15 | 379.86 | 346.61 | 243.50 | 132.33 | 128.14 | 97.61 |
CT-16 | 334.78 | 342.38 | 252.78 | 181.49 | 116.10 | 86.98 |
CT-17 | 380.90 | 374.56 | 275.66 | 222.57 | 144.73 | 114.92 |
CT-18 | 318.66 | 321.80 | 221.78 | 170.84 | 92.46 | 76.97 |
CT-19 | 323.24 | 350.01 | 232.62 | 207.98 | 127.83 | 91.65 |
CT-20 | 358.16 | 325.94 | 211.85 | 120.73 | 90.39 | 83.33 |
mean | 362.91 | 353.31 | 246.70 | 182.36 | 126.65 | 100.29 |
% | 100.0 | 97.4 | 68.0 | 50.2 | 34.9 | 27.6 |