>>48
On the other hand, HAp is the main ingredient contained in the enamel of a tooth and a living bone.
And, this ingredient is composed of calcium ions, phosphate ions and hydroxide ions.
※ Chemical quantitatively, it’s expressed as Ca 10 ( PO 4 ) 6 ( OH ) 2 .
Holes are made on the ingredient under some condition, phosphate ions contained in it are replaced by carbonic ions.
As the above, this ingredient shows various compositions dependently on adjustment, condition.
