Table 3 Median and standard deviation (± SD) of chromium (cr) ıon release for m and sl brackets (mg/l).
Solations | Bracket | 30 min | 24 h | 1 months | |||
|---|---|---|---|---|---|---|---|
Median | ± SD | Median | ± SD | Median | ± SD | ||
pH 1,5 | M | 359.532 | 5.490 | 536.791 | 108.480 | 277.495 | 43.492 |
pH 3,0 | M | 503.709 | 27.951 | 874.977 | 34.466 | 93.291 | 21.047 |
pH 7,0 | M | 423.523 | 15.378 | 428.673 | 37.618 | 74.691 | 1.008 |
pH 1,5 | SL | 550.950 | 64.686 | 682.173 | 87.847 | 355.266 | 38.922 |
pH 3,0 | SL | 707.377 | 111.405 | 770.991 | 38.631 | 181.645 | 70.568 |
pH 7,0 | SL | 486.905 | 20.270 | 545.550 | 14.924 | 580.595 | 80.591 |
pH 1,5 | C | 57.432 | 10.034 | 64.041 | 11.569 | 17.150 | 1.004 |
pH 3,0 | C | 54.509 | 12.321 | 75.055 | 9.272 | 9.246 | 1.011 |
pH 7,0 | C | 59.832 | 13.545 | 63.314 | 11.902 | 1.696 | 0.02 |
