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Table 2 Calcium ion (Ca 2+ ) release from the bleached specimens treated with 1.5% TiF 4 and 2.1% NaF in mm 2 (mg/ml)

From: Does post-bleaching fluoridation affect the further demineralization of bleached enamel? An in vitro study

  N   4th day 8th day 12th day 16th day Total
Control group 10 Mean 3,59 3,2 3,72 4,55 15,07
   Std dev 0,54 0,59 1,23 0,89 1,81
   Min. 3,01 2,46 2,46 2,74 12,6
   Max. 4,93 4,38 6,58 5,75 18,36
38% HP 10 Mean 5,75 5,18 5,56 5,95 22,44
   Std dev 1,6 1,52 0,71 0,37 2,52
   Min. 3,83 3,01 4,66 5,48 18,36
   Max. 7,95 8,5 6,85 6,58 27,68
38% HP + NaF 10 Mean 2,05 3,15 3,94 4,52 13,67
   Std dev 0,83 0,58 1,01 0,83 1,86
   Min. 0,82 2,19 2,46 3,29 10,68
   Max. 3,01 4,11 5,75 6,03 15,61
38% HP + TiF4 10 Mean 1,15 1,94 2,66 3,37 9,12
   Std dev 0,92 1,54 0,63 0,48 2,4
   Min. 0 0 1,64 2,46 4,93
   Max. 2,46 4,11 3,56 3,83 11,5