Hydroxyapatite
A naturally occurring mineral form of calcium apatite with the formula Ca₅(PO₄)₃(OH). It is the main inorganic component of tooth enamel and bone, widely used in medical and dental applications such as bone grafts and dental implants due to its biocompatibility and similarity to human hard tissues. Hydroxyapatite is particularly beneficial for medical professionals and patients requiring bone and dental restoration.