Question

_____ is an essential Constitution of bones and tooth enamel.​

Answer 1

Answer:

Calcium Hydroxyapatiteis "Ca10(PO46(OH)2" an essential Constituent of bones and tooth enamel.

Explanation:

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Answer 2

The hydroxyapatite is a main mineral constituent of the hard tissues such as bones and teeth

Hydroxyapatite, commonly known as hydroxylapatite (HA), is a calcium apatite mineral having the formula Ca5(PO4)3(OH), however it is generally written Ca10(PO4)6(OH)2 to indicate that the crystal unit cell is made up of two entities. [4] The hydroxyl endmember of the complex apatite group is hydroxyapatite. Fluoride, chloride, or carbonate can replace the OH ion, resulting in fluorapatite or chlorapatite. In the hexagonal crystal system, it crystallizes. White hydroxyapatite powder is pure hydroxyapatite. However, naturally occurring apatites can exhibit brown, yellow, or green colorations, which are similar to the discolorations seen in dental fluorosis.