Hydroxylapatite is a naturally occurring mineral form of calcium phosphate, primarily found in human bones and teeth. It plays a crucial role in providing structural support and strength to these tissues. Its chemical formula is Ca10(PO4)6(OH)2, indicating that it contains calcium, phosphate, and hydroxide ions. In addition to its biological significance, hydroxylapatite is used in various medical and dental applications. It is often incorporated into bone grafts and dental products, such as toothpaste and mouth rinses, to promote remineralization and enhance oral health. Its biocompatibility makes it an ideal material for these purposes.