From: Bioactive calcium phosphate materials and applications in bone regeneration
Composition | Enamel | Dentin | Bone | Hydroxyapatite |
---|---|---|---|---|
Calcium [wt.%] | 36.5 | 35.1 | 34.8 | 39.6 |
Phosphorus [wt.%] | 17.7 | 16.9 | 15.2 | 18.5 |
Ca/P (molar ratio) | 1.63 | 1.61 | 1.71 | 1.67 |
Sodium [wt.%] | 0.5 | 0.6 | 0.9 | – |
Magnesium [wt.%] | 0.44 | 1.26 | 0.72 | – |
Potassium [wt.%] | 0.08 | 0.05 | 0.03 | – |
Carbonate [wt.%] | 3.5 | 5.6 | 7.4 | – |
Fluoride [wt.%] | 0.01 | 0.06 | 0.03 | – |
Chloride [wt.%] | 0.30 | 0.01 | 0.13 | – |
Pyrophosphate [wt.%] | 0.022 | 0.10 | 0.07 | – |
Total inorganic [wt.%] | 97 | 70 | 65 | 100 |
Total organic [wt.%] | 1.5 | 20 | 25 | – |
Water [wt.%] | 1.5 | 10 | 10 | – |
Ignition products (800 °C) | β-TCP + HAP | β-TCP + HAP | HAP + CaO | HAP |