Hydroxylapatite is a type of mineral that is commonly found in bones and teeth. It is often used in the medical field as a material for implants and artificial bone grafts. However, there are several other synonyms that are used to refer to this mineral. These include calcium hydroxyapatite, calcium phosphate, and calcium orthophosphate. Additionally, hydroxylapatite can also be referred to simply as HA. Regardless of the name used, the unique properties of this mineral make it an essential component in many medical and dental procedures, helping to improve the health and well-being of patients around the world.