Table 4: Example Intratubular Elemental Compositions (Weight Percent ± Error) Determined by EDS for each of the Dentin Samples A Through F. Note: For Sample F, Intratubular Location was Approximated Due to the Mineral Layer Formation

Element A B C D E F
Carbon 12.40 (0.33) 13.96 (0.42) 13.39 (0.32) 9.65 (0.31) 17.77 (0.43) 10.14 (0.32)
Nitrogen Not detected Not detected Not detected Not detected Not detected Not detected
Oxygen 32.43 (0.32) 7.28 (0.32) 29.00 (0.32) 30.98 (0.40) 15.33 (0.36) 33.87 (0.39)
Sodium 0.80 (0.10) 0.41 (0.06) 0.75 (0.05) 0.78 (0.05) 0.65 (0.11) 0.60 (0.05)
Magnesium 0.89 (0.07) 0.43 (0.07) 0.26 (0.03) 0.31 (0.03) 0.41 (0.08) Not detected
Phosphorous 16.90 (0.16) 20.79 (0.24) 17.86 (0.15) 16.72 (0.16) 20.09 (0.21) 17.25 (0.16)
Calcium 36.56 (0.36) 57.12 (0.63) 38.32 (0.35) 39.51 (0.39) 45.74 (0.50) 36.49 (0.36)
Fluorine Not detected Not detected Not detected 1.75 (0.19) Not detected 1.54 (0.20)